CUSAT CAT 2022 Question Paper Botany

BOTANY
(FINAL)

1. Which one among the following statements is FALSE about DNA?
(A) Located in chromosomes
(B) Carries genetic information from parent to offspring
(C) Abundantly found in the cytosol
(D) There is a precise correlation between amount of DNA and number of sets of
chromosome per cell

2. Which one among the following acts as the inducer of lac operon?

(A) Glucose
(B) Fructose
(C) Lactose
(D) Galactose

3. Kary Mullis is associated with

(A) RFLP
(B) PCR
(C) Phosphorylation reaction
(D) RAPD

4. Bacillus thuringiensis is used in the biocontrol of

(A) Nematodes
(B) Fungal pathogens
(C) Bacterial pathogens
(D) Insect pests

5. Which one among the following natural systems in India is a Hotspot of Biodiversity?

(A) Sunderbans
(B) Western Ghats
(C) Eastern Ghats
(D) Gangetic plains

6. Which one among the following is an example of ex-situ conservation?

(A) National park
(B) Wildlife sanctuary
(C) Seed bank
(D) Sacred groves

7. Which one among the following is the cause for man-wildlife conflicts?

(A) Reduction in the availability of natural food resources
(B) Increase in the forest area
(C) Adequate rainfall
(D) Curiosity of wildlife animals that leads for the invasion to outside
the forest area

8. The Jim Corbett National Park is famous for notable man-eaters

(A) Leopard
(B) Tiger
(C) Bear
(D) Lion

9. The first transgenic virus-resistant plant was

(A) Rice
(B) Cotton
(C) Tobacco
(D) Tomato

10. Enzyme targeted in gene silencing for delaying fruit ripening in tomato is

(A) Polygalacturonase (PG)
(B) Glyphosate
(C) ADA
(D) P53

11. Polyploidy is induced through

(A) Irradiation
(B) Mutagenic chemicals
(C) Ethylene
(D) Colchicine

12. Heterosis is the

(A) Appearance of spontaneous mutation
(B) Induction of mutation
(C) Mixture of two or more traits
(D) Superiority of hybrids over their parents

13. Somatic hybridization is achieved through

(A) Grafting
(B) Conjugation
(C) Protoplast fusion
(D) Recombinant DNA technology

14. A virologist wants to study the viral effects on plants. Which one among the
following plant parts should be excluded?

(A) Pith
(B) Shoot apex
(C) Phloem
(D) Cortex

15. The genotypic ratio of a monohybrid cross is

(A) 1:2:1
(B) 3:1
(C) 2:1:1
(D) 9:3:3:1

16. An exception to Gregor Johann Mendel’s laws is

(A) Independent assortment
(B) Linked genes
(C) Dominance
(D) Incomplete dominance

17. Which term of genetics represents the potential ability of a plant cell to
grow into a complete plant?

(A) Pluripotency
(B) Totipotency
(C) Cloning
(D) Variation

18. Experimental plant for Gregor Johann Mendel’s genetic study is

(A) Onion
(B) Carrot
(C) Garden pea
(D) Lily

19. A circle divided into sectors proportional to the frequency of items shown is called

(A) Bar chart
(B) Pie chart
(C) Histogram
(D) Frequency polygon

20. Which of the following is the protein database?

(A) Genebank
(B) Swiss-Prot
(C) DDBJ
(D) PDB

21. The natural place of an organism or community is termed as

(A) Niche
(B) Biome
(C) Habitat
(D) Habit

22. Agar agar is obtained from

(A) Gracillaria
(B) Gelidium
(C) Gigartina
(D) Chara

23. The alga that is exploited as a rich source of protein is

(A) Spirogyra
(B) Spirulina
(C) Chlamydomonas
(D) Scytonema

24. Brown algae is characterized by the presence of

(A) Phycocyanin
(B) Phycoerythrin
(C) Fucoxanthin
(D) Haematochrome

25. Which one among the following is a N2 fixer?

(A) Ulothrix
(B) Anabaena
(C) Ulva
(D) Hydrodictyon

26. Pyrenoids in green algal cells are related to

(A) Enzyme secretion
(B) Protein storage
(C) Starch formation
(D) General metabolism

27. The non-motile greatly thickened asexual spores are called

(A) Hypnospores
(B) Aplanospores
(C) Macrozoospores
(D) Microzoospores

28. Fungal spores produced asexually at the tips of hyphae are called

(A) Sporangiophores
(B) Conidia
(C) Anthospores
(D) Meiospores

29. All fungi can be called as

(A) Autotrophs
(B) Saprophytes
(C) Parasites
(D) Heterotrophs

30. Destruction of 50% maize plants in USA in 1970 was due to infection by

(A) Hemileia vastratrix
(B) Helminthosporium oryzae
(C) Claviceps purpurea
(D) Ustilago maydis

31. Genus Penicillium belongs to the class

(A) Basidiomycetes
(B) Ascomycetes
(C) Phycomycetes
(D) Deuteromycetes

32. When fungi feed on dead organic matter, they are known as

(A) Dimorphic
(B) Parasites
(C) Saprophytes
(D) Photoautotrophs

33. Wart disease caused by Synchytrium endobioticum occurs in

(A) Cabbage
(B) Garden pea
(C) Groundnut
(D) Potato

34. Which one among the following secretes toxins under
storage conditions of crop plants?

(A) Aspergillus
(B) Pencillium
(C) Fusarium
(D) Colletotrichum

35. To which one among the following groups you would place a plant that produces
spores and embryos, but lacks seeds and vascular tissue?

(A) Fungi
(B) Bryophytes
(C) Pteridophytes
(D) Gymnosperms

36. Elaters are present in the sporogonium of

(A) Marchantia
(B) Riccia
(C) Selaginella
(D) Sphagnum

37. Which place in India is called "The Golden Mine of Liverworts"?

(A) Eastern Himalayas
(B) Western Himalayas
(C) Western Ghats
(D) Eastern Ghats

38. Dichotomous branching is found in

(A) Fern
(B) Funaria
(C) Liverworts
(D) Marchantia

39. Who among the following scientists was a paleobotanist?

(A) P. Maheshwari
(B) S.R. Kashyap
(C) V. Puri
(D) Birbal Sahni

40. Heterospory refers to the production of

(A) Sexual and asexual spores
(B) Large and small spores
(C) Haploid and diploid spores
(D) Diploid and tetraploid spores

41. According to available fossil records, which one among the following was the first
land vascular plant?

(A) Psilophytales
(B) Lycopods
(C) Horse-tail
(D) Cycas

42. A stele without a central pith is called

(A) Solenostele
(B) Protostele
(C) Dictyostele
(D) Siphonostele

43. In gymnosperms, pollination occurs exclusively by

(A) Animals
(B) Wind
(C) Water
(D) Insects

44. Red wood tree is

(A) Cedrus
(B) Pinus
(C) Sequoia
(D) Dalbergia

45. Fruitless flowering plants are called

(A) Sterile plants
(B) Angiosperms
(C) Primitive plants
(D) Gymnosperms

46. Which one among the following is a living fossil?

(A) Pinus
(B) Ginkgo
(C) Thuja
(D) Deodar

47. Canada balsam is an oleoresin obtained from

(A) Abies balsamea
(B) Impatiens balsamia
(C) Pinus sylvestris
(D) Helianthus annus

48. Senescence is induced by

(A) IAA
(B) Cytokinin
(C) GA3
(D) ABA

49. In Ferns, the term frond is used to denote

(A) Stem
(B) Root
(C) Leaf
(D) Sex organ

50. Common characteristic of Bryophytes and Pteridophytes is

(A) Vascularization
(B) Terrestrial habit
(C) Fertilization in water
(D) Independent sporophyte

51. Tap roots are commonly found in

(A) Gymnosperms
(B) Angiosperms
(C) Monocots
(D) Dicots

52. Haustoria are found in

(A) Symbionts
(B) Parasites
(C) Saprophytes
(D) Legume nodules

53. The presence of vessels and companion cells are characteristic features of

(A) Angiosperm
(B) Gymnosperm
(C) Pteridophyta
(D) Echinodermata

54. Which one among the following is the tallest tree of the world?

(A) Eucalyptus regnans
(B) Sequoia sempervirens
(C) Pinus longifolia
(D) Pinus wallichiana

55. Basic unit of classification is

(A) Kingdom
(B) Division
(C) Species
(D) Order

56. Which one of the following is associated with bacterial cell?

(A) Ribosomes
(B) Nucleus
(C) Chloroplasts
(D) Lysosomes

57. Lateral roots originate from

(A) Cortex
(B) Endodermal cells
(C) Pericycle
(D) Cork cambium

58. The fiber cells of plants are a type of

(A) Parenchyma
(B) Meristematic cell
(C) Sclerenchyma
(D) Collenchyma

59. The age of trees can be determined by

(A) Measuring its diameter in cubic feet
(B) Counting the number of annual rings
(C) Counting the number of leaves
(D) Finding out the number of branches

60. Wound healing in plants is initiated by

(A) Apical meristem
(B) Lateral meristem
(C) Secondary meristem
(D) Intercalary meristem

61. In flowering plants, meiosis occurs at the time of

(A) Seed germination
(B) Bud formation
(C) Root primordia formation
(D) Pollen grain formation

62. Which one among the following statements is true for the pollen tube?

(A) It shows only tip growth
(B) It is composed of three non-cellular zones
(C) It shows chemostatic movements
(D) It shows radial cytoplasmic streaming

63. Which one among the following fruits is produced by parthenocarpy?

(A) Brinjal
(B) Apple
(C) Banana
(D) Jackfruit

64. The fusion of female reproductive nucleus with the male reproductive nucleus is

(A) Adoption
(B) Excretion
(C) Fertilization
(D) Regeneration

65. The two nuclei at the end of the pollen tube are called

(A) Tube nucleus and generative nucleus
(B) Sperm and ovum
(C) Generative nucleus and stigma
(D) Tube nucleus and sperm

66. Loss of water through the stomata of leaves is known as

(A) Guttation
(B) Exudation
(C) Transpiration
(D) Evaporation

67. Kranz anatomy is found in the leaves of

(A) Wheat
(B) Mustard
(C) Potato
(D) Sugarcane

68. Water-soluble photosynthetic pigment is

(A) Chlorophyll a
(B) Xanthophyll
(C) Anthocyanin
(D) Chlorophyll b

69. The cell wall of Spirogyra consists of
(A) Cellulose
(B) Chitin
(C) Lignin
(D) Suberin

70. Which one among the following is an insectivorous plant?

(A) Tridax procumbens
(B) Utricularia gibba
(C) Calotropis gigantean
(D) Pongamia pinnata

71. The ploidy level of prothallus, the gametophyte stage in fern, is

(A) Haploid
(B) Diploid
(C) Triploid
(D) Tetraploid

72. The presence of carinal canal is a specialized feature in

(A) Lycopodium
(B) Selaginella
(C) Isoetes
(D) Equisetum

73. Development of gametophyte directly from spore mother cell
without meiosis is called

(A) Apospory
(B) Apogamy
(C) Polyembryony
(D) Apomixis

74. Gymnosperms differ from angiosperms in the

(A) Presence of naked seeds and lack of vessels
(B) Presence of seeds and vessels
(C) Having abortive seeds
(D) Having tracheids

75. Xylem of gymnosperms lacks

(A) Tracheids
(B) Xylem fibres
(C) Xylem parenchyma
(D) Vessels

76. In gymnosperms, the endosperm is formed

(A) at the time of fertilization
(B) before fertilization
(C) after fertilization
(D) along with the development of embryo

77. Sago palm is

(A) Cycas
(B) Pinus
(C) Gnetum
(D) Cocos

78. Transfer of male gametes in bryophytes and pteridophytes occurs through

(A) Wind
(B) Water
(C) Birds
(D) Insects

79. Cycas is a

(A) Monoecious plant
(B) Dioecious plant
(C) Hermaphrodite plant
(D) Sterile plant

80. The first land plants were formed in the era of

(A) Precambrian
(B) Paleozoic
(C) Mesozoic
(D) Pre-paleozoic

81. CAM pathway was first discovered in

(A) Xerophytes
(B) Mesophytes
(C) Succulents
(D) Hydrophytes

82. Streptomycin is active against

(A) Gram positive bacteria
(B) Gram negative bacteria
(C) Viruses
(D) Fungi

83. One among the following traits is INCORRECT about monocotyledonous plants

(A) Single cotyledon
(B) Parallel venation
(C) Fibrous root
(D) Flowers are pentamerous

84. Nitrogenous base together with a deoxyribose sugar moiety and
phosphate group forms

(A) Nucleoside
(B) Protein
(C) Amino acid
(D) Nucleotide

85. The study of individual organisms or species is called

(A) Synecology
(B) Autoecology
(C) Habitat ecology
(D) Population ecology

86. The callus is

(A) Undifferentiated mass of cells
(B) Differentiated mass of cells
(C) Redifferentiated mass of cells
(D) Exclusively dead cells

87. Auxins are

(A) Phytohormones
(B) Steroids
(C) Porphyrins
(D) Sugar molecules

88. Gibberellins were first extracted from

(A) Bacteria
(B) Virus
(C) Fungi
(D) Algae

89. Phytohormone responsible for signaling abiotic stress is

(A) Cytokinin
(B) GA3
(C) IAA
(D) ABA

90. The root hairs originate from

(A) Rhizodermis
(B) Trichomes
(C) Accessory cells
(D) Trichoblasts

91. Bordered pits are typically found in

(A) Sieve cells
(B) Vessel wall
(C) Companion cells
(D) Sieve tube wall

92. Annual rings are distinct in plants growing in

(A) Temperate regions
(B) Tropical regions
(C) Grasslands
(D) Arctic region

93. Pollen grains are shed at 2-celled stage in angiosperms and contain

(A) Tube cell + Vegetative cell
(B) Tube cell + Generative cell
(C) Tube cell + Male gamete
(D) Two sclerenchyma cells

94. The location of microspore mother cells is

(A) Anther
(B) Filament
(C) Style
(D) Stigma

95. The ovule of the plants is also called as

(A) Megasporangium
(B) Microsporangium
(C) Embryo Sac
(D) Endosperm

96. Which one among the following is an example of tetrasporic embryo sac?

(A) Polygonum type
(B) Allium type
(C) Endymion type
(D) Peperomia type

97. Polyembryony is the phenomenon found in

(A) Allium
(B) Citrus
(C) Poa
(D) Brassica

98. Floral condition with the absence of distinct sepals and petals is known as

(A) Perianth
(B) Corolla
(C) Androecium
(D) Gynoecium

99. Typical example for green alga is

(A) Laminaria
(B) Sargassum
(C) Chlamydomonas
(D) Fucus

100. Tissue that helps for flexibility in plants is

(A) Parenchyma
(B) Collenchyma
(C) Sclerenchyma
(D) Callus

101. Which one among the following tuber crops is an example for
modified adventitious root?

(A) Sweet potato
(B) Onion
(C) Garlic
(D) Carrot

102. Which one among the following is a unisexual plant?

(A) Mustard
(B) Papaya
(C) Sunflower
(D) Hibiscus

103. The causal organism for smut disease in wheat is

(A) Ustilago kolleri
(B) Ustilago hordei
(C) Ustilago tritici
(D) Ustilago avenae

104. Red rot disease of sugarcane is caused by

(A) Phytophthora infestans
(B) Alternaria solani
(C) Colletotrichum falcatum
(D) Cercospora personata

105. Plants that can tolerate high concentration of salt in the soil are termed as

(A) Epiphytes
(B) Halophytes
(C) Xerophytes
(D) Hydrophytes

106. Cuscuta is an example for

(A) Autotroph
(B) Parasite
(C) Saprotroph
(D) Host

107. Crown gall disease is caused by

(A) Agrobacterium tumefaciens
(B) Escherichia coli
(C) Streptomyces aureus
(D) Pectobacterium carotovorum

108. Clove is an aromatic

(A) Fruit
(B) Flower bud
(C) Stem
(D) Root

109. Orange colour in carrot is due to

(A) Vulgaxanthin
(B) Carotenes
(C) Betalins
(D) Phycoxanthin

110. The translocation of food materials in plants takes place through

(A) Parenchyma
(B) Collenchyma
(C) Xylem
(D) Phloem

111. Which one among the following plants treats malaria
caused by Plasmodium falciparum?

(A) Cedrus
(B) Azadirachta
(C) Cinchona
(D) Eucalyptus

112. ‘Yellow spot’ disease on citrus leaves is due to the deficiency of

(A) Br
(B) Mg
(C) Zn
(D) Fe

113. Biodegradable wastes can be converted into useful substances by

(A) Bacteria
(B) Viruses
(C) Nuclear proteins
(D) Radioactive substances

114. Plant secondary metabolite used in leather industry is

(A) Resin
(B) Latex
(C) Tannin
(D) Mucilage

115. Bulb of onion is a modified form of

(A) Leaf
(B) Stem
(C) Root
(D) Leaflet

116. Curcumin is isolated from a member belonging to one among the following
families of plants

(A) Liliaceae
(B) Zingiberaceae
(C) Asteraceae
(D) Chenopodiaceae

117. Which one among the following is a group of non-green heterotrophic organism?

(A) Fungi
(B) Algae
(C) Ferns
(D) Mosses

118. Cell wall of higher plant is composed of

(A) Cellulose, hemicellulose and pectin
(B) Cellulose, hemicellulose and chitin
(C) Cellulose and chitin
(D) Cellulose only

119. ‘Cell theory’ was proposed by

(A) Beadle and Tatum
(B) Schleiden and Schwann
(C) Robert Hooke
(D) Leeuwenhoeck

120. Which one among the following is the longest phase in cell cycle?

(A) Prophase
(B) Metaphase
(C) Telophase
(D) Anaphase

121. The ribosome relates to

(A) Respiration
(B) Photosynthesis
(C) Protein synthesis
(D) Fat synthesis

122. The crossing of F1 offspring with homozygous recessive parent is called

(A) Back cross
(B) Test cross
(C) F1 cross
(D) F2 cross

123. Cocoa used for flavor of chocolates is obtained from

(A) Artocarpus
(B) Terminalia
(C) Theobroma
(D) Ficus

124. ‘Greenhouse effect’ relates to

(A) Increased growth of green algae
(B) Global warming
(C) Cultivation of vegetables in house
(D) Development of terrace gardens

125. The rate of transpiration in plants is measured by

(A) Porometer
(B) Osmometer
(C) Microscope
(D) Potometer

126. The result of point mutation is

(A) Deletion
(B) Insertion
(C) Duplication
(D) Change in single base pair

127. The enzymatic scissors employed in recombinant DNA technology is

(A) Ligase
(B) Phosphatase
(C) Ribonuclease
(D) Restriction enzymes

128. Enzyme that unwinds the DNA double helix at the replication fork is

(A) Helicase
(B) Primase
(C) Ligase
(D) Oxygenase

129. ‘Jumping genes’ are known as

(A) Transposons
(B) Transversion
(C) Transduction
(D) Transformation

130. At which stage does colchicine hamper cell division?

(A) Anaphase
(B) Telophase
(C) Interphase
(D) Metaphase

131. Nuclear condition having more than the diploid set of chromosomes is termed as

(A) Haploidy
(B) Diploidy
(C) Polyploidy
(D) Trisomy

132. Virus which infects bacteria is called

(A) Lysophage
(B) Bacteriophage
(C) Virophage
(D) TMV

133. Protein coat of virus is called

(A) Nucleid
(B) Capsid
(C) Capsomere
(D) Outer envelope

134. Which one among the following is haploid?

(A) Pollen grains
(B) Endosperm
(C) Anther wall
(D) Petals

135. Puccinia is also known as

(A) Golden fungi
(B) Rust fungi
(C) Rock fungi
(D) Blue fungi

136. Economically important Saccharomyces produces

(A) Waste water
(B) Inhibitor of fermentation
(C) Ethanol
(D) Sewage

137. Lichens are symbiotic association of

(A) Blue-green algae and basidomycetes
(B) Red algae and ascomycetes
(C) Brown algae and phycomycetes
(D) Blue-green algae and ascomycetes

138. The element located at the centre of the porphyrin ring in chlorophyll molecule is

(A) Calcium
(B) Magnesium
(C) Potassium
(D) Manganese

139. Inflorescence of onion is

(A) Raceme
(B) Corymb
(C) Catkin
(D) Umbel

140. A True fruit is one that is

(A) developed solely from the ovary after fertilization
(B) developed from whole gynoecium
(C) developed from ovule
(D) developed from thalamus

141. Laminarin and mannitol are the stored food materials of

(A) Green algae
(B) Red algae
(C) Brown algae
(D) Bluegreen algae

142. Fermentation occurs in the

(A) Presence of oxygen
(B) Absence of oxygen
(C) Presence of nitrogen
(D) Presence of ethylene

143. ‘Velamen tissues’ in epiphytes are found

(A) Below the epidermis
(B) Below the endodermis
(C) Outside the cortex
(D) Outside the exodermis

144. Bulliform cells are found in the leaves of

(A) Grass
(B) Mango
(C) Banyan
(D) Legumes

145. Methanogens belong to

(A) Eubacteria
(B) Dinoflagellates
(C) Archaebacteria
(D) Fungi

146. Smallest plant in the world is

(A) Sequoia
(B) Wolffia
(C) Rafflesia
(D) Salix

147. An example for C4 plants is

(A) Rice
(B) Sugarcane
(C) Spinach
(D) Wheat

148. Water soluble vitamin is

(A) Vitamin A
(B) Vitamin C
(C) Vitamin E
(D) Vitamin D

149. Technical process in which water is removed from a product after it is frozen and
placed under vacuum is termed as

(A) Polymerization
(B) Sublimation
(C) Lyophilization
(D) Synthesis

150. Soil, moisture and light are known as

(A) Physical factors
(B) Chemical factors
(C) Biological factors
(D) Extra-terrestrial factors

FINAL ANSWER KEY
Subject Name: 602 BOTANY
SI No. Key SI No. Key SI No. Key SI No. Key SI No. Key
1 C 31 B 61 D 91 B 121 C
2 A 32 C 62 A 92 A 122 B
3 B 33 D 63 C 93 B 123 C
4 D 34 A 64 C 94 A 124 B
5 B 35 B 65 A 95 A 125 D
6 C 36 A 66 C 96 D 126 D
7 A 37 B 67 D 97 B 127 D
8 A 38 C 68 C 98 A 128 A
9 C 39 D 69 A 99 B 129 A
10 A 40 B 70 B 100 B 130 D
11 D 41 A 71 A 101 A 131 C
12 D 42 B 72 D 102 B 132 B
13 C 43 B 73 A 103 C 133 B
14 B 44 C 74 A 104 C 134 A
15 A 45 D 75 D 105 B 135 B
16 B 46 B 76 B 106 B 136 C
17 B 47 A 77 A 107 A 137 D
18 C 48 D 78 B 108 B 138 B
19 B 49 C 79 B 109 B 139 D
20 D 50 C 80 B 110 D 140 A
21 C 51 D 81 C 111 C 141 C
22 D 52 B 82 B 112 B 142 B
23 B 53 A 83 D 113 A 143 D
24 C 54 A 84 D 114 C 144 A
25 B 55 C 85 B 115 B 145 C
26 C 56 A 86 A 116 B 146 B
27 A 57 C 87 A 117 A 147 B
28 B 58 C 88 A 118 A 148 B
29 D 59 B 89 A 119 B 149 C
30 D 60 C 90 A 120 A 150 D