NEET Foundation Biology Multiple Choice Question And Answers

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NEET Foundation Biology Multiple Choice Question And Answers

Question 1. Which of the following is true?

  1. ABA open stomata.
  2. ABA and cytokinin does not effect on stomata.
  3. ABA open, cytokinin close stomata.
  4. ABA close and cytokinin open the stomata.

Answer. 4. ABA close and cytokinin open the stomata.

Question 2. Gizzard of cockroach is a part of

  1. respiratory system
  2. digestive system
  3. immune system
  4. circulatory system

Answer. 2. digestive system

Question 3. Opening and closing of stomata is controlled by

  1. K+
  2. Mg2+
  3. Ca2+
  4. N

Answer. 1. K+

Question 4. In which of the following solution volume of a cell increases?

  1. Hypotonic
  2. Isotonic
  3. Hypertonic
  4. Supertonic

Answer. 1. Hypotonic

Question 5. Allele is

  1. isomer of a gene
  2. a chromosome
  3. chromatids
  4. alternate form of gene

Answer. 4. alternate form of gene

Question 6. Potato is the modification of

  1. stem
  2. root
  3. leaf
  4. flower

Answer. 1. stem

Question 7. Triticum aestivum is

  1. tetraploid
  2. hexaploid
  3. triploid
  4. pentaploid

Answer. 2. hexaploid

Question 8. Carrot is micropropagate through

  1. embryo
  2. embryoids
  3. shoot culture
  4. callus

Answer. 4. callus

Question 9. For self-pollination, flower must be

  1. unisexual
  2. bisexual
  3. monosexual
  4. asexual

Answer. 2. bisexual

Question 10. Electron microscope is discovered by

  1. Robert Hooke
  2. Knoll and Ruska
  3. Robert Brown
  4. Janssen

Answer. 2. Knoll and Ruska

Question 11. Which is common in respiration and photosynthesis?

  1. Oxidation
  2. Phytochrome
  3. Cytochrome
  4. Photosystem

Answer. 3. Cytochrome

Question 12. Treatment of seeds with low temperature is called

  1. vernalization
  2. phytochrome
  3. hybridization
  4. scarification

Answer. 1. vernalization

Question 13. C2 plant shows efficiency even in

  1. low CO2 concentration
  2. low temperature
  3. high O2 concentration
  4. at low water

Answer. 1. low CO2 concentration

Question 14. Oxidative phosphorylation occur in

  1. photosynthesis
  2. respiration
  3. NADH2 formation
  4. photolysis of water

Answer. 2. respiration

Question 15. Lactic acid converted into alcohol in process called

  1. fermentation
  2. aerobic respiration
  3. respiration
  4. photosynthesis

Answer. 1. fermentation

Question 16. Quantasome are present in

  1. stroma
  2. grana
  3. mitochondria
  4. golgi body

Answer. 2. grana

Question 17. Sunder ban contain mainly

  1. mangrove plant
  2. alpine tree
  3. tice forest
  4. grass

Answer. 1. mangrove plant

Question 18. Bhopal gas tragedy is due to

  1. benzyl isocyanide
  2. benzene cyanide
  3. methyl isocyanide
  4. methyl cyanide

Answer. 3. methyl isocyanide

Question 19. Ferrodoxin contain

  1. Mg
  2. Co
  3. iron
  4. nitrite

Answer. 3. iron

Question 20. The scientific study of inheritance of character to improve human race is

  1. genetics
  2. eugenics
  3. euthenic
  4. genealogy

Answer. 2. eugenics

Question 21. Modern system of classification classified organisms in _________ kingdom.

  1. one
  2. two
  3. four
  4. five

Answer. 4. five

Question 22. Middle lamella contain

  1. chitin
  2. lignin
  3. pectin
  4. cellulose

Answer. 3. pectin

Question 23. Root develop from any part of plant is

  1. tap root
  2. adventitious
  3. primary root
  4. secondary root

Answer. 2. adventitious

Question 24. Cork cambium is called

  1. phellem
  2. bast
  3. phellogen
  4. wood

Answer. 3. phellogen

Question 25. Guard cell lined

  1. stomata
  2. hydathode
  3. lenticel
  4. pneumatophore

Answer. 1. stomata

Question 26. Maximum water loss takes place through

  1. cuticle
  2. stomata
  3. hydathode
  4. lenticel

Answer. 2. stomata

Question 27. In succession complexities in structure

  1. drastically increasing
  2. slowly increasing
  3. does not increasing
  4. constant

Answer. 2. slowly increasing

Question 28. The part which is grafting on stalk of another tree is called

  1. graft
  2. bulbil
  3. bud
  4. scion

Answer. 4. scion

Question 29. Centrosome are present

  1. in plant cell only
  2. in animal cell
  3. in both plant and animal cell
  4. None of these

Answer. 2. in animal cell

Question 30. ER work for synthesis of

  1. carbohydrate
  2. protein
  3. photosystem
  4. ATP

Answer. 2. protein

Question 31. Lysosome contain

  1. hormone
  2. lytic enzyme
  3. hydrolytic enzyme
  4. useful material

Answer. 3. hydrolytic enzyme

Question 32. Development of fruit without fertilization is called

  1. parthenocarpy
  2. hybridizations
  3. tissue culture
  4. anther culture

Answer. 1. parthenocarpy

Question 33. Prokaryotic cell does not have

  1. nucleolus
  2. membrane bound organelles
  3. centrioles
  4. All of these

Answer. 4. All of these

Question 34. Sea anemone belongs to the phylum

  1. porifera
  2. echinodermata
  3. coelenterata
  4. protista

Answer. 3. coelenterata

Question 35. Which is an indicator of air pollution?

  1. Lichens
  2. Mosses
  3. Algae
  4. Fungi

Answer. 1. Lichens

Question 36. The alcohol obtained on fat metabolism is

  1. methanol
  2. ethanol
  3. glycerol
  4. All of these

Answer. 3. glycerol

Question 37. Source of light in an electron microscope is

  1. infrared rays
  2. UV rays
  3. visible light
  4. electron beam

Answer. 4. electron beam

Question 38. Which of these is not correct regarding Bt cotton?

  1. It Is A Disease Or Resistant Plant.
  2. It Produces More Yield Of Cotton.
  3. It Has Been Obtained By Recombination.
  4. No Such Plant Is Heard Of.

Answer. 4. No Such Plant Is Heard Of.

Question 39. Green revolution was given by

  1. Darwin
  2. Wallace
  3. Norman Borlaug
  4. R. Mishra

Answer. 3. Norman Borlaug

Question 40. Which of these enzymes is maximum in chloroplast

  1. RUBP carboxylase
  2. PEP
  3. glucohexokinase
  4. isomerase

Answer. 1. RUBP carboxylase

Question 41. Vessels in xylem and companion cells in phloem are the characteristic features of

  1. angiosperm
  2. gymnosperm
  3. pteridophytes
  4. bryophytes

Answer. 1. angiosperm

Question 42. Edible part in Tomato is

  1. mesocarp
  2. thalamus
  3. pericarp
  4. endocarp, inflorescence

Answer. 3. pericarp

Question 43. Multinucleate aseptate hyphae present in Rhizopus are called

  1. homothallic
  2. heterothallic
  3. trichogone
  4. coenocyte

Answer. 4. coenocyte

Question 44. Stored food in green algae is

  1. starch
  2. cellulose
  3. fat
  4. glycogen

Answer. 1. starch

Question 45. Fat soluble vitamin is

  1. A
  2. B
  3. C
  4. B12

Answer. 1. A

Question 46. Clitellum in earthworm is responsible for

  1. respiration
  2. locomotion
  3. digestion
  4. cocoon formation

Answer. 4. cocoon formation

Question 47. Conglobate gland is present in

  1. male cockroach
  2. female cockroach
  3. earthworm
  4. Hydra

Answer. 1. male cockroach

Question 48. Conjoint, collateral, closed, scattered vascular bundles with sclerenchymatous sheath is observed in

  1. dicot stem
  2. monocot stem
  3. dicot root
  4. monocot root

Answer. 2. monocot stem

Question 49. Plants growing near seashores are expected to behave as

  1. hydrophytes
  2. xerophytes
  3. lithophytes
  4. halophytes

Answer. 4. halophytes

Question 50. The pyramid of biomass in a good ecosystem is

  1. always upright
  2. sometimes upright
  3. inverted
  4. upright and some times inverted

Answer. 3. inverted

Question 51. Which of these is incorrect in view of double fertilization?

  1. Given by Nawaschin in 1889
  2. It refers to the Fusion of Male and Female Gamete and Male Gamete with the Secondary Nuclei
  3. Endosperm Formed is Diploid
  4. Endosperm Formed Provides Nutrition to the Embryo

Answer. 3. Endosperm Formed is Diploid

Directions (52–64): In each of the following questions, a statement of assertion is given and a corresponding statement of reason is given just below it. Of the statements, mark the correct answer as:

  1. if both A and R are true and R is the correct explanation of A.
  2. if both A and R are true but R is not the correct explanation of A.
  3. if A is true but R is false.
  4. both A and R are false.

Question 52. Assertion: Protists are similar to prokaryotes.
Reason: Protists do not possess membrane bound organelles.

Answer. 4. both A and R are false.

Question 53. Assertion: Diatoms are golden brown or yellow in colour.
Reason: Cell wall in diatoms in silicified.

Answer. 2. if both A and R are true but R is not the correct explanation of A.

Question 54. Assertion: Euglena is motile.
Reason: It shows pseudopodia locomotion.

Answer. 3. if A is true but R is false.

Question 55. Assertion: Diatoms are useful even after their death.
Reason: Dead bodies of diatoms made the ocean floor fertile for the growth of other organisms.

Answer. 3. if A is true but R is false.

Question 56. Assertion: Euglenophyta do not reproduce in unfavourable conditions.
Reason: Sexual reproduction do not take place in euglenophyta.

Answer. 1. if both A and R are true and R is the correct explanation of A.

Question 57. Assertion: Protista is internally diverse group.
Reason: Plant like organisms and animal like organisms both are grouped under protista.

Answer. 1. if both A and R are true and R is the correct explanation of A.

Question 58. Assertion: Diatoms are motile.
Reason: They lack any organelles of locomotion.

Answer. 2. if both A and R are true but R is not the correct explanation of A.

Question 59. Assertion: Salmonella typhi most commonly affects the lungs.
Reason: Salmonella typhi causes pneumonia.

Answer. 4. both A and R are false.

Question 60. Assertion: Gout is a communicable disease.
Reason: In gout body forms excess ammonia.

Answer. 4. both A and R are false.

Question 61. Assertion: AIDS is the starting stage of HIV infection.
Reason: In HIV infection, immune system is unaffected.

Answer. 4. both A and R are false.

Question 62. Assertion: Dengue is a viral disease.
Reason: Dengue is a viral disease.

Answer. 2. if both A and R are true but R is not the correct explanation of A.

Question 63. Assertion: Plague is a disease of rats caused by bacteria.
Reason: It is also called black death.

Answer. 2. if both A and R are true but R is not the correct explanation of A.

Question 64. Assertion: Sandfly transmits kala-azar.
Reason: In kala-azar, the parasite damages the brain.

Answer. 3. if A is true but R is false.

Question 65. Gymnosperms constitute dominant flora of

  1. tropical regions
  2. temperate regions
  3. both (1) and (2)
  4. none of these

Answer. 2. temperate regions

Question 66. Gymnosperms generally have

  1. tap roots
  2. adventitious roots
  3. small roots
  4. none of these

Answer. 1. tap roots

Question 67. Which plants act as connecting link between gymnosperms and angiosperms?

  1. Cycadales
  2. Ginkgoales
  3. Gnetales
  4. None of these

Answer. 3. Gnetales

Question 68. Vessels in xylem of gymnosperms are

  1. present
  2. absent
  3. absent except genetales
  4. present except genetales

Answer. 3. absent except genetales

Question 69. Pollination in gymnosperms occurs by

  1. wind
  2. insects
  3. water
  4. all of these

Answer. 1. wind

Question 70. Endosperm in gymnosperms is

  1. generally haploid
  2. always haploid
  3. triploid
  4. with different ploidy levels

Answer. 2. always haploid

Question 71. Ovule in gymnosperms in generally

  1. anatropous and bitegmic
  2. orthotropous and bitegmic
  3. orthotropous and unitegmic
  4. anatropous and unitegmic

Answer. 3. orthotropous and unitegmic

Question 72. Seeds in gymnosperms represent

  1. single generation
  2. 2 generations
  3. 3 generations
  4. none of these

Answer. 3. 3 generations

Question 73. Which is commonly known as ‘Living fossil’?

  1. ginkgo biloba
  2. thuja
  3. araucaria
  4. cupressus

Answer. 1. ginkgo biloba

Question 74. Which is the largest order of modern gymnosperms?

  1. Gnetales
  2. Cycadales
  3. Coniferales
  4. Ginkgoales

Answer. 3. Coniferales

Question 75. Gymnosperms differ from most of angiosperms

  1. in having seeds
  2. in being smaller in system
  3. in having naked ovules
  4. None of these

Answer. 3. in having naked ovules

Question 76. One of the main evolutionary features of alternation of generations from algae to flowering plant is

  1. gradual elaboration of sporophyte
  2. gradual elaboration of gametophyte
  3. gradual elaboration of gametophyte and sporophyte
  4. elimination of sporophyte

Answer. 1. gradual elaboration of sporophyte

Question 77. Phenomenon of ‘Sulphur shower’ is related with

  1. cycas
  2. pinus
  3. ginkgo
  4. none of these

Answer. 2. pinus

Question 78. Gymnosperm of medicinal use is

  1. ephedra
  2. pinus
  3. zamia
  4. cycas

Answer. 1. ephedra

Question 79. The characteristic of gymnosperm ovule is the presence of

  1. pollen chamber
  2. integument
  3. vascular supply
  4. nucellus

Answer. 1. pollen chamber

Question 80. Endosperm in gymnosperms develops from

  1. microspore
  2. megaspore
  3. secondary nucleus
  4. archegonium

Answer. 2. megaspore

Question 81. Megasporophylls of ferns of gymnosperms are comparable to which structure of angiosperms?

  1. Stamens
  2. Ovules
  3. Carpels
  4. Megasporophylls

Answer. 3. Carpels

Question 82. Birbal Sahni discovered a fossil plant from Rahmahal hills. It belongs to

  1. Angiosperms
  2. Gymnosperms
  3. Bryophyta
  4. Pteridophyta

Answer. 2. Gymnosperms

Question 83. Largest ovules (or largest gametes or longest plants) are found among

  1. monocots
  2. dicots
  3. gymnosperms
  4. angiosperms

Answer. 3. gymnosperms

Question 84. The explanation for occurrence of ciliated motile sperms in xerophytic Cycas is

  1. it is vestigial character indicating the periodophytic ancestry of Cycas
  2. it is a functional character, the pollen chamber of Cycas is filled with water and the sperms must be ciliated for swimming
  3. when the pollen grain and ovules of Cycas fall on the ground, the pollen germinates and sperms swim in rain water to reach the ovule
  4. the cilia are a zerophytic character like hair

Answer. 1. it is vestigial character indicating the periodophytic ancestry of Cycas

Question 85. Wood of Pinus is

  1. manoxylic and monoxylic
  2. pycnoxylic and monoxylic
  3. manoxylic and polyxylic
  4. pycnoxylic and polyxylic

Answer. 2. pycnoxylic and monoxylic

Question 86. Which gymnosperms is having ‘bitegmic ovules’?

  1. Cycas
  2. Ginkgo
  3. Gnetum
  4. Taxus

Answer. 3. Gnetum

Question 87. How much time is generally taken by the pine plant from pollination to fertilization?

  1. Four months
  2. Fifteen months
  3. Two years
  4. Four years

Answer. 2. Fifteen months

Question 88. Term ‘Alternation of generations’ was first used in plants by

  1. Amici
  2. Hofmeister
  3. Kolreuter
  4. None of these

Answer. 2. Hofmeister

Question 89. Foremost Indian embryologist was

  1. S.C. Maheswari
  2. P. Maheshwari
  3. H.Y. Mohan Ram
  4. None of these

Answer. 2. P. Maheshwari

Question 90. Single microsporangium per anther is found in

  1. Gossypium
  2. Hibiscus
  3. Arceuthobium
  4. Najas

Answer. 3. Arceuthobium

Question 91. ‘Callase’ enzyme that dissolves callose of pollen tetrads to separate four pollens is provided by

  1. pollens
  2. tapetum
  3. middle layers
  4. endothecium

Answer. 3. middle layers

Question 92. Compound pollens held together in small units are called

  1. pollinium
  2. massulae
  3. translator
  4. None of these

Answer. 2. massulae

Question 93. Ubisch bodies are provided by

  1. tapetum
  2. pollen kitt
  3. exine
  4. intine

Answer. 1. tapetum

Question 94. ‘Pollen grains embryo sacs’ were first observed in

  1. Hymenocallis
  2. Elodaea
  3. Hyacinthus
  4. None of these

Answer. 3. Hyacinthus

Question 95. Iatropalynology is

  1. medicinal aspects of pollen grains
  2. fossil pollen grains
  3. pollens in relation to honey
  4. None of these

Answer. 1. medicinal aspects of pollen grains

Question 96. Pollinia are characteristic of

  1. Asclepiadaceae
  2. Labiatae
  3. Compositae
  4. Aristolochiaceae

Answer. 1. Asclepiadaceae

Question 97. Pollen grain is a

  1. megaspore
  2. microspore
  3. microsporophyll
  4. microsporangium

Answer. 2. microspore

Question 98. If the innermost layer of integument becomes specialized as a nutritive layer, it is

  1. tapetum
  2. endothecium
  3. endosperm
  4. endothelium

Answer. 4. endothelium

Question 99. Pollenkitt is present in pollens of

  1. anemophilous flowers
  2. entomophilous flowers
  3. zoophilous flowers
  4. malacophilous flowers

Answer. 2. entomophilous flowers

Question 100. The stamens represent

  1. microsporangia
  2. megasporangia
  3. megasporophylls
  4. microsporophylls

Answer. 4. microsporophylls

Question 101. Division of cytoplasm after meiotic division in pollen mother cell is called

  1. cytokinesis
  2. cytomixis
  3. amphimixis
  4. apomixis

Answer. 1. cytokinesis

Question 102. Which one of the following produces both enzymes and hormone?

  1. endothecium
  2. middle layer
  3. epidermis
  4. tapetum

Answer. 4. tapetum

Question 103. Normal type of sexual reproduction is

  1. apomixis
  2. amphimixis
  3. pseudogamy
  4. None of these

Answer. 2. amphimixis

Question 104. Tapetum and endothecium in anther are derived from

  1. primary sporogenous cell
  2. primary parietal cell
  3. Both (1) and (2)
  4. None of these

Answer. 2. primary parietal cell

Question 105. In a pollen grain, larger nucleus is

  1. generative nucleus
  2. vegetative nucleus
  3. polar nucleus
  4. None of these

Answer. 2. vegetative nucleus

Question 106. The fibrous thickenings of endothecium are mainly made of

  1. Cellulose
  2. Pectin
  3. Lignin
  4. None of these

Answer. 1. Cellulose

Question 107. Which is the most common type of tapetum in angiosperms?

  1. Amoeboid
  2. Secretory or glandular
  3. Both (1) and (2)
  4. None of these

Answer. 2. Secretory or glandular

Question 108. Vascular tissue is derived from

  1. the ectoderm
  2. all the germ layers
  3. the epithelium
  4. the mesoderm

Answer. 4. the mesoderm

Question 109. The connective tissues, which from the frame work of organs such as lymph nodes, bone marrow and liver are

  1. reticular
  2. areolar
  3. adipose
  4. None of these

Answer. 1. reticular

Question 110. Term ecology was given by

  1. Reiter
  2. Cuvier
  3. Haeckel
  4. Malthus

Answer. 3. Haeckel

Question 111. Leaf abscission, fruit fall, and bud dormancy occur by which phytohormone?

  1. Auxin
  2. Cytokinin
  3. Gibberellins
  4. Abscisic acid

Answer. 4. Abscisic acid

Question 112. Number of segments found in the body of cockroach are

  1. 8
  2. 10
  3. 12
  4. 15

Answer. 2. 10

Question 113. Which of the following is not an insectivorous plant?

  1. Drosera
  2. Nepenthes
  3. Monotrapa
  4. Utricularia

Answer. 3. Monotrapa

Question 114. Which branch study about remains of plant life?

  1. Palaentology
  2. Palaeobotany
  3. Eugenics
  4. Palynology

Answer. 2. Palaeobotany

Question 115. If water enters in a cell, the pressure exerted by its swollen protoplast is

  1. turgor pressure
  2. DPD
  3. osmotic pressure
  4. imbibition

Answer. 1. turgor pressure

Question 116. How many molecules of glycine is required to release one CO2 molecule in photorespiration?

  1. One
  2. Two
  3. Three
  4. Four

Answer. 2. Two

Question 117. Wilting occurs when

  1. rate of transpiration is higher than absorption
  2. rate of absorption is higher than transpiration
  3. excess root pressure
  4. high relative humidity in air

Answer. 1. rate of transpiration is higher than absorption

Question 118. Longest animal with one nostril is

  1. whale
  2. tortoise
  3. shark
  4. python

Answer. 1. whale

Question 119. Bacterial flagella is made up of

  1. protein
  2. amines
  3. lipids
  4. carbohydrates

Answer. 4. carbohydrates

Question 120. Pollution of SO2 destroy

  1. Lichen
  2. Fungi
  3. Algae
  4. Fishes

Answer. 1. Lichen

Question 121. Seaweeds are important source of

  1. chlorine
  2. fluorine
  3. iodine
  4. bromine

Answer. 1. chlorine

Question 122. Agar agar is obtained from

  1. green algae
  2. red algae
  3. brown algae
  4. blue green algae

Answer. 2. red algae

Question 123. Basic structure of protein was given by

  1. Stanley
  2. Nicholson
  3. Watson
  4. Singer

Answer. 1. Stanley

Question 124. Nucleus pulposus is found in

  1. brain
  2. nucleus
  3. intervertebral disc
  4. liver

Answer. 3. intervertebral disc

Question 125. Animal that excrete urea produced during metabolism of amino acid is

  1. ureotelism
  2. uricotelism
  3. ammonotelism
  4. aminotelism

Answer. 1. ureotelism

Question 126. In frogs, oviduct is formed by

  1. wolffian duct
  2. mesonephric duct
  3. mullerian duct
  4. bidder’s canal

Answer. 3. mullerian duct

Question 127. Which of the following nephridia is not found in earthworm?

  1. Septal nephridia
  2. Macro nephridia
  3. Integumentary nephridia
  4. Pharyngeal nephridia

Answer. 2. Macro nephridia

Question 128. Which of the following is a neem product and used as insect repellent?

  1. Azadirachtin
  2. Rotenon
  3. Parathion
  4. Endrin

Answer. 1. Azadirachtin

Question 129. Which of the following sugar is found in nucleic acid?

  1. Dextrose
  2. Glucose
  3. Levulose
  4. Deoxyribose

Answer. 4. Deoxyribose

Question 130. Cellulose is a polymer of

  1. α-glucose
  2. β-glucose
  3. α-fructose
  4. β-fructose

Answer. 2. β-glucose

Question 131. Broad leaved forest oak are found in

  1. tropical deciduous forest
  2. tropical ever green forest
  3. temperate deciduous forest
  4. north coniferous forest

Answer. 3. temperate deciduous forest

Question 132. The sum total of all population of the same kind of organisms constitute

  1. cline
  2. genus
  3. community
  4. species

Answer. 4. species

Question 133. Competition for food, light and space is most severe between two

  1. closely related species growing in the same area
  2. closely related species growing in different habitats
  3. distantly related species growing in different habitats
  4. distantly related species growing in same area

Answer. 1. closely related species growing in the same area

Question 134. Amphids found upon lips of Ascaris

  1. are organ of smell and chemoreception
  2. secrete saliva
  3. are adhesive organs
  4. secrete proteolytic enzymes

Answer. 1. are organ of smell and chemoreception

Question 135. In sex linkage, the speciality is

  1. atavism
  2. reversion
  3. gene flow
  4. criss-cross inheritance

Answer. 4. criss-cross inheritance

Question 136. By which of the following food is captured in sponges?

  1. Porocytes
  2. Pinacocytes
  3. Choanocytes
  4. Trophocytes

Answer. 3. Choanocytes

Question 137. The flight muscles of birds are attached to

  1. coracoid
  2. scapula
  3. keel of sternum
  4. clavicle

Answer. 3. keel of sternum

Question 138. Which one of the following shows a taxonomically closely-related group?

  1. Earthworm, ringworm, tapeworm
  2. Silverfish, cuttlefish, starfish
  3. Housefly, dragonfly, butterfly
  4. Sea horse, sea anemone, sea urchin

Answer. 3. Housefly, dragonfly, butterfly

Question 139. Ephyra is the larva of

  1. Sea anemone
  2. Obelia
  3. Aurelia
  4. Physalia

Answer. 3. Aurelia

Question 140. Gymnospermous plants lack fruit because

  1. fertilization does not occur in them
  2. they lack pollination
  3. they lack ovary
  4. All of these

Answer. 3. they lack ovary

Question 141. In lichens, the term ascomata is applied to

  1. ascocarp
  2. ascus mother cell
  3. ascogenous hyphae
  4. None of these

Answer. 1. ascocarp

Question 142. The characteristics that define a family are more general than those that define a

  1. genus
  2. class
  3. phylum
  4. cohort

Answer. 4. cohort

Question 143. Which one of the following is responsible for healing the wounds in plants?

  1. Intercalary meristem
  2. Promeristem
  3. Lateral meristem
  4. Secondary meristem

Answer. 4. Secondary meristem

Question 144. In which of the following, amphivasal vascular bundles are reported?

  1. Dracaena
  2. Salvia
  3. Mangifera indica
  4. both (1) and (3)

Answer. 1. Dracaena

Question 145. Which one of the following is seedless vascular plant?

  1. Ferns
  2. Horse tails
  3. Club mosses
  4. All of these

Answer. 4. All of these

Question 146. Sedimentation, a process that has been going since the earth was formed, can take place

  1. on land
  2. in water bodies
  3. Both (1) and (2)
  4. in deserts

Answer. 3. Both (1) and (2)

Question 147. Stomatal pores bounded by a single ring-shaped guard cells are found in

  1. capsule of Funaria
  2. pinnule of Cycas
  3. leaf of Dryopteris
  4. None of these

Answer. 1. capsule of Funaria

Question 148. Cohesive-adhesive theory of water molecules explains that

  1. water ascends in the plant due to transpiration pull
  2. column of water remains continuous due to cohesive force of water molecules
  3. Both (1) and (2)
  4. water does not ascend in plant due to transpiration pull

Answer. 3. Both (1) and (2)

Question 149. The arrangement of leaves in a pattern that minimizes overlapping or shading but maximizes leaf exposure to light is called

  1. etiolation
  2. leaf mosaic
  3. introrse condition
  4. glossopodium

Answer. 2. leaf mosaic

Question 150. In Selaginella, the adaxial outgrowth from the base of the leaf is called

  1. velum
  2. glossopodium
  3. ligule
  4. rhizophore

Answer. 3. ligule

Question 151. Under which condition, transpiration from plants would be must rapid?

  1. When there is lot of humidity in the atmosphere
  2. When the air is still (immovable)
  3. When environmental conditions are dry
  4. All of these

Answer. 3. When environmental conditions are dry

Question 152. Presence of ciliated anterozoids in Dryopteris indicates

  1. terrestrial habit
  2. aquatic ancestry
  3. Both (1) and (2)
  4. None of these

Answer. 2. aquatic ancestry

Question 153. Mesophyll is differentiated into palisade and spongy tissue in

  1. hydrophytic leaf
  2. monocot leaf
  3. dicot leaf
  4. xerophytic leaf

Answer. 3. dicot leaf

Question 154. The rate at which the energy is stored by photosynthetic and chemosynthetic activity of producers, is called

  1. secondary productivity
  2. net productivity
  3. Both (1) and (2)
  4. primary productivity

Answer. 4. primary productivity

Question 155. The ascomycetes growing under soil level are termed as

  1. hypogean
  2. lignicolous
  3. terricolous
  4. coprophilous

Answer. 1. hypogean

Question 156. The biomass of each succeeding trophic level is

  1. equal to the next trophic level
  2. more than one proceeding it
  3. constantly fixed
  4. less than the one proceeding it

Answer. 4. less than the one proceeding it

Question 157. Lignin is component of the secondary cell walls of

  1. parenchyma
  2. sclerenchyma
  3. collenchyma
  4. epidermis

Answer. 2. sclerenchyma

Question 158. Plasmodesmata allow direct exchange of materials

  1. within the cells
  2. between neighbour cells
  3. between two distant cells
  4. None of the above

Answer. 2. between neighbour cells

Question 159. Gaseous exchange in the submerged hydrophytes occurs through

  1. stomata
  2. hydathodes
  3. lenticels
  4. general body surface of plants

Answer. 4. general body surface of plants

Question 160. Exarch and polyarch vascular bundles occur in

  1. monocot stem
  2. monocot root
  3. dicot stem
  4. dicot root

Answer. 2. monocot root

Question 161. Which of the following terms represents a pair of contrasting characters?

  1. Alleles
  2. Genotypes
  3. Phenotypes
  4. Homozygous

Answer. 1. Alleles

Question 162. Which type of fruit the Betel nut is?

  1. Nut
  2. Sorosis
  3. Drupe
  4. Berry

Answer. 4. Berry

Question 163. In which of the following plants, there is no differentiation of bark, heartwood and sapwood?

  1. Date palm
  2. Ashok
  3. Mango
  4. All of these

Answer. 1. Date palm

Question 164. Which of the following tissues is present in periderm?

  1. Phellem
  2. Xylem
  3. Duramen
  4. Bast

Answer. 1. Phellem

Question 165. Which one of the following is the characteristic of photosynthesis?

  1. Formation of starch from formaldehyde.
  2. Oxidation of chlorophyll occurs.
  3. There occurs formation of chlorophyll pigment from inorganic salts.
  4. Light energy is converted into chemical energy.

Answer. 4. Light energy is converted into chemical energy.

Question 166. Bicollateral vascular bundle is a characteristic feature of family

  1. cruciferae
  2. solanaceae
  3. cucurbitaceae
  4. All of these

Answer. 3. cucurbitaceae

Question 167. The old leguminous roots turn green because

  1. leghaemoglobin changes into chlorophyll-c
  2. leghaemoglobin is broken down
  3. leghaemoglobin changes into chlorophyll-b
  4. leghaemoglobin changes into chlorophyll-a

Answer. 2. leghaemoglobin is broken down

Question 168. In which of the following fruits dispersal takes place by grazing animals such as goat and cow?

  1. Coconut
  2. Xanthium
  3. Mangifera indica
  4. Cactus

Answer. 2. Xanthium

Question 169. The family leguminosae is divided into three subfamilies on the basis of

  1. gynoecium only
  2. corolla
  3. aestivation of calyx and corolla
  4. corolla and androecium

Answer. 4. corolla and androecium

Question 170. Fern and Cycas are similar in having

  1. ciliated gametes
  2. seeds
  3. trachea
  4. cambium

Answer. 1. ciliated gametes

Question 171. Third generation pesticide is

  1. juvenile hormone analogue
  2. pheromone
  3. sterilogastrone
  4. weedicide

Answer. 1. juvenile hormone analogue

Question 172. Formation of coal from plant material by the process of diagenesis and metamorphism is known as

  1. coal gasification
  2. plant ash
  3. coalification
  4. fossilization

Answer. 3. coalification

Question 173. Which one of the following oils is produced by Linum usitatissimum in India?

  1. Linseed oil
  2. Sunflower oil
  3. Groundnut oil
  4. Palm oil

Answer. 1. Linseed oil

Question 174. A plant completing its life cycle before the onset of dry condition is said to be

  1. short day plant
  2. long day plant
  3. drought escaping
  4. amphibious

Answer. 3. drought escaping

Question 175. Dumb-bell shaped guard cells are seen in

  1. dicot leaves
  2. monocot leaves
  3. seeds
  4. fruits

Answer. 2. monocot leaves

Question 176. Fat globules are present in

  1. areolar tissue
  2. fibres
  3. adipose tissue
  4. blood tissue

Answer. 3. adipose tissue

Question 177. Experiment to prove necessity of CO2 for photosynthesis is

  1. Hills experiment
  2. Mohl’s experiment
  3. Calvins experiment
  4. Arnon’s experiment

Answer. 2. Mohl’s experiment

Question 178. A hypothetical substance involved in flowering is

  1. auxin
  2. kinetin
  3. GA
  4. florigen

Answer. 1. auxin

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