CUSAT CAT 2018 Question Paper Botony

Subject Code : 602 Section Code : -Select- Difficulty: 1

Subject Answer
Q Id Questions
Code Key

Who developed the aeroponic method of cultivation of plants?

(A) Antonie van Leeuwenhoek

602 901 (B) Murashige and Skoog (D)

(C) Davis et al

(D) Zobel et al

Which one of the following has the haustoria?

(A) Mango

602 902 (B) Orchid (C)

(C) Cuscuta

(D) Cashew nut

Green Fluorescent Protein (GFP) was isolated from

(A) C. elegans

602 903 (B) Drosophila melanogaster (C)

(C) Aequoria victoria

(D) Zea mays

Viticulture is the branch of study of crop plants pertaining to

(A) Betel vines

602 904 (B) Grapes (B)

(C) Oranges

(D) Pine apples

The most abundant sugar in honey is

(A) Fucose

602 905 (B) Amylose (D)

(C) Rhamnose

(D) Fructose

Which of the following is a viral disease of potato?

(A) Early blight of potato

602 906 (B) Late blight of potato (B)

(C) Leaf role of potato

(D) None of the above

602 907 Which of the following is a capsid? (A)

(A) Protein part of the virus

(B) Nucleic acid part of the virus

(C) Both (A) and (B)

(D) None of the above

The germination of pine seed is

(A) Hypogeal

602 908 (B) Epigeal (B)

(C) Vivipary

(D) Ovipary

Green fodder stored under anaerobic condition is known as

(A) hay

602 909 (B) straw (C)

(C) silage

(D) roughage

The plant with the smallest genome is

(A) Oryza sativa

602 910 (B) Vigna mungo (C)

(C) Arabidopsis thaliana

(D) Nicotiana tabacum

The chemical molecule that signals the symbiosis is

(A) Curcumin

602 911 (B) Flavonoid (B)

(C) Cytochrome C

(D) Glycogen

DNA synthesis occurs during

(A) Anaphase

602 912 (B) G1 phase (D)

(C) G2 phase

(D) S phase

Regulated processes leading to cell death via a series of well-defined morphological changes is termed as

(A) Anabolism

602 913 (B) Apomixis (C)

(C) Apoptosis

(D) Synopsis

Out of 900 reported species of living gymnosperms, conifers are represented by about 500 species. About
2,50,000 species of angiosperms are also reported in the world. The vast and dominant woodlands in Europe,
Asia, North America and mountains such as Himalayas are wooded with

(A) All gymnosperms except conifers
602 914 (B)
(B) Only conifers

(C) Only angiosperms

(D) Angiosperms and all gymnosperms except conifers

602 915 Transduction was discovered by (D)

(A) Safferman and Moris

(B) Louis Pasteur

(C) Smithy and Knight

(D) Lederberg and Zinder

Which one of the following form the trunk of banana?

(A) Inflorescence

602 916 (B) Pseudo stem (B)

(C) Rhizome

(D) Young leaf

Law of segregation is also called as

(A) Law of purity

602 917 (B) Law of impurity (A)

(C) Law of mutation

(D) Principle of segregation

Plants that grow on sand are termed as

(A) Chasmophytes

602 918 (B) Oxylophytes (D)

(C) Xanthophytes

(D) Psammophytes

The method of reproduction in pteriodophytes is through

(A) Seeds

602 919 (B) Spores (B)

(C) Fruitlet

(D) Buds

Development of fruit without fertilization is called as

(A) Apocarpy

602 920 (B) Polycorpy (C)

(C) Parthenocarpy

(D) Syncarpy

A plant that helps cure jaundice is

(A) Lactra saliva

602 921 (B) Helianthus annus (C)

(C) Phyllanthus niruri

(D) Withania somifera

602 922 Monocot root differs from that of dicot in having (C)

(A) Open vascular bundles

(B) Scattered vascular bundles

(C) Well-developed pith

(D) Radial arrangement of vascular bundles

Dahlia mosaic virus contains

(A) RNA

602 923 (B) DNA (B)

(C) Both DNA and RNA

(D) None of the above

An example of transposons is

(A) An-Ab complex

602 924 (B) Ac-Ds elements (B)

(C) FMN/FAD

(D) NAD/NAD

Which organelle has only single membrane?

(A) Nucleolus

602 925 (B) Mitochondrion (C)

(C) Peroxisome

(D) Golgi body

Cyrbrids are hybrids having

(A) Nucleus from one parent and cytoplasm from both parents

602 926 (B) Nucleus from both parents and cytoplasm from only one parent (A)

(C) Both (A) and (B)

(D) Nuclei from both parents and cytoplasm from one parent

Agroinfection is a process of

(A) Infection of crop plants with fungus

602 927 (B) Infection of agricultural plants with virus (D)

(C) A. tumifaciens infects legume plants

(D) A. tumifaciens transfers a piece of DNA to host genome

The term ‘embryo rescue’ is used for

(A) Embryo culture

602 928 (B) Ovary culture (D)

(C) Ovule culture

(D) All of the above

The true statement about ‘green house effect’ is that it is

(A) caused by combination of many gases

602 929 (B) caused by CO2 (B)

(C) caused only by CO2, CFC, CH4 and NO2 gases

(D) None of the above

The molecule(s) formed during cyclic-photophosphorylation include

(A) ADP

602 930 (B) NADPH2 (D)

(C) ATP

(D) ATP + NADPH2

The process of photorespiration in plants leads to

(A) release of enhanced levels of CO2

602 931 (B) removal of waste metabolites (C)

(C) lowering of the efficiency of photosynthetic carbon fixation

(D) enhanced plant biomass

Biodiversity

(A) decreases towards the equator

602 932 (B) increases towards the equator (B)

(C) remains unaltered throughout the planet

(D) None of the above

Fluorescein diacetate is used to test the pollen viability based on the activity of which one of the following
enzymes?

(A) Amylase
602 933 (B)
(B) Esterase

(C) Catalase

(D) Decarboxylase

A red-fruited tomato plant was crossed with yellow colored fruit one, produced 173 offspring 84 of which were
yellow and 89 red. Determine the genotype of parents.

(A) 1 : 1
602 934 (A)
(B) 1 : 3

(C) 1 : 3 : 3: 1

(D) None of the above

In cereals, Puccinia graminis causes

(A) Blight

602 935 (B) Gall (C)

(C) Rust

(D) Wilt

Ribose has 5 carbon atoms of which 3 are asymmetric. What is the maximum number of stereoisomers that may
exist for ribose in Pentose Phosphate Pathway?

(A) 2
602 936 (C)
(B) 6

(C) 8

(D) 10

602 937 Hardness of water is mainly due to the presence of (B)

(A) Na +

(B) Ca and Mg ions

(C) H2 SO4

(D) Cl and SO4 - ions

Edible part of banana fruit is

(A) Epicarp

602 938 (B) Epicarp and mesocarp (D)

(C) Mesocarp and less developed endocarp

(D) Endocarp and less developed mesocarp

Choose the volume (ml) of 5M Sulphuric acid required to prepare 1 litre 0.002M solution

(A) 4.0

602 939 (B) 40.0 (C)

(C) 0.4

(D) 400.0

Indefinite stamens are characteristic of family

(A) Labiatae

602 940 (B) Gramineae (C)

(C) Malvaceae

(D) Cruciferae

Inversion is a

(A) somatic mutation

602 941 (B) genetic mutation (C)

(C) chromosomal mutation

(D) point mutation

Community ecology is called as

(A) Autecology

602 942 (B) Caste (C)

(C) Synecology

(D) Both (A) and �

Phosphoric acid is tribasic with pKa’s of 2 14, 6.86 and 12.4. The ionic form that predominates at pH 3.2 is

(A) H3PO4

602 943 (B) H2PO4 - (B)

(C) HPO4 --

(D) PO4 ---

602 944 A nucleoside is composed of (C)

(A) Nitrogenous base

(B) Nitrogenous base + Phosphate

(C) Nitrogenous base + Sugar

(D) Nitrogenous base + Sugar + Phosphate

Polyethylene glycol is a

(A) mutagen

602 945 (B) fusogen (B)

(C) immunogen

(D) carcinogen

Period of dry weather longer than normal is called as

(A) flood

602 946 (B) famine (D)

(C) disaster

(D) drought

Which of the following absent, according to Oparin, on the primitive surface of Earth?

(A) CH4

602 947 (B) O2 (B)

(C) H2

(D) H2O

The technique used to produce a large number of plantlets by tissue culture is

(A) Plantlet culture

602 948 (B) Organ culture (C)

(C) Micropropagation

(D) Macropropagation

Biogas is a mixture of

(A) 40% CH2 and 60% CO2

602 949 (B) 40% CH4 and 60% C2H2 (D)

(C) 40% CO2 and 60% C2H2

(D) 60% CH4 and 40% CO2

Totipotency means

(A) flowering in culture medium

602 950 (B) development of fruit from flower in culture (C)

(C) development of plant from a cell in a culture medium

(D) All of the above

602 951 The simplest plant genome greatly understood is that of (B)

(A) Oryza sativa

(B) Arabidopsis thaliana

(C) Pisum sativum

(D) Triticum aestivum

In Cycas the endosperm is

(A) Haploid

602 952 (B) Diploid (A)

(C) Triploid

(D) Tetraploid

Pollination by wind is called as

(A) Anemophily

602 953 (B) Hydrophily (A)

(C) Entomorphily

(D) Zoophily

Puccinia graminis causes

(A) Wilt

602 954 (B) Rust (B)

(C) Stunted growth

(D) Leaf curl disease

Disaccharide molecules that contain b 1 -4 glycosidic linkage include

(A) Sucrose and Maltose

602 955 (B) Sucrose and Isomaltose (D)

(C) Maltose and Isomaltose

(D) Lactose and Celloboise

Clove, a commonly used spice is obtained from

(A) Leaf

602 956 (B) Flower bud (B)

(C) Root

(D) Fruit

Which family of viruses belongs to single-strand DNA?

(A) Herpesviridae

602 957 (B) Poxviridae (D)

(C) Retroviridae

(D) Geminiviridae

Crossing of F1 heterozygous with homozygous recessive parent is known as

(A) Poly crosses

602 958 (B) Test cross (B)

(C) Reciprocal crosses

(D) Top cross

602 959 Chlorosis in plants occurs due to (C)

(A) high intensity of sunlight

(B) low intensity of sunlight

(C) deficiency of Mg and Fe in the soil

(D) absence of yellow pigment in the soil

Gasohol is a blend of

(A) 20% ethanol + 70% petrol + 10% kerosene

602 960 (B) 10% ethanol + 80% petrol + 10% kerosene (C)

(C) 20% ethanol + 80% petrol

(D) 10% ethanol + 90% petrol

In N-linked glycosylation, the oligosaccharide chain is attached to protein by

(A) Asn

602 961 (B) Arg (A)

(C) Ser

(D) Thr

During lactic acid fermentation, net yield of ATP and NADH per glucose is

(A) 2 ATP and 2 NADH

602 962 (B) 2 ATP and 0 NADH (A)

(C) 4 ATP AND 2 NADH

(D) 4 ATP AND 0 NADH

Diisopropyl fluorophosphates (DIPFP) inhibits serine proteases by

(A) competitively

602 963 (B) non-competitively (C)

(C) irreversibly

(D) feed-back mode

Enzymes with the same recognition sequence are known as

(A) Isobars

602 964 (B) Isozymes (D)

(C) Enantiomers

(D) Isoschizomers

Colchicine is a mitosis inhibitor because it

(A) prevents microtubule polymerization

602 965 (B) affects spindle formation (A)

(C) clogs the cells

(D) dissolves nucleus

602 966 Cybrids are (D)

(A) nuclear hybrids

(B) derived from cross pollination

(C) cytological hybrids

(D) cytoplasmic hybrids

Caterpillar that affects coconut is

(A) Calcandra oryza

602 967 (B) Prodenia litura (C)

(C) Nephantis seranopa

(D) Pectinophora gossypiella

In blue-green alga, photosynthesis takes place in

(A) Chloroplasts

602 968 (B) Lamellae (B)

(C) Heterocysts

(D) Carotene

The phylogenetic system of classification was proposed by

(A) Bentham and Hooker

602 969 (B) Adolf Engler and Karl Prantl (B)

(C) Darwin and Malthus

(D) Carl Linnaeus

Angiosperms are

(A) open seeded plants

602 970 (B) closed seeded plants (B)

(C) seedless plants

(D) aquatic plants

When the calyx and corolla are combined, it is called

(A) Epicalyx

602 971 (B) Leaf sheath (D)

(C) Bracteole

(D) Perianth

Solanum tuberosum is

(A) Tomato

602 972 (B) Potato (B)

(C) Banana

(D) Mango

The collection of dried plant specimens is called

(A) Vivarium

602 973 (B) Aquarium (D)

(C) Terrarium

(D) Herbarium

602 974 What is the byproduct of bacterial photosynthesis? (C)

(A) Oxygen

(B) Hydrous oxide

(C) Sulphur

(D) Hydrogen sulphide

In which phase of mitosis in plant cells does the nucleolus in the nucleus seem to reappear?

(A) Telophase

602 975 (B) Prophase (A)

(C) Metaphase

(D) Anaphase

Which of the following is a primary or transitional meristem?

(A) Root hair

602 976 (B) Ground meristem (B)

(C) Collenchyma

(D) Vascular cambium

Pine and fir are abundant in

(A) tropical forests

602 977 (B) coniferous forests (B)

(C) temperate forests

(D) polar forests

Eugenia caryophyllus is the botanical name of

(A) Clove

602 978 (B) Eucalyptus (A)

(C) Coriander

(D) Cardamom

Air pollution affects plants mostly on

(A) leaves

602 979 (B) flowers (A)

(C) stems

(D) roots

The seed germination in Xanthium is inhibited by

(A) Allelopathy

602 980 (B) Hard seed coat (B)

(C) Dormant embryo

(D) Reduced embryo

602 981 Companion cells have not been observed in the following angiosperm/s (A)

(A) Austrobaileya

(B) Sarcandra and Gentum

(C) Austrobaileya and Sarcandra

(D) All of the above

The modified stem present in Dioscorea is

(A) Rhizome

602 982 (B) Corm (B)

(C) Tuber

(D) Sobole

The anthers in Cruciferae are

(A) dithecous, extrorse

602 983 (B) dithecous introrse (B)

(C) monothecous, extrorse

(D) monothecous, introrse

The lightest wood in the plant kingdom comes from

(A) Aeschynomene indica

602 984 (B) Ougenia dalbergioides (C)

(C) Ochroma lagopus

(D) Erythrina suberosa

Spirogyra reproduces asexually by forming

(A) Akinete

602 985 (B) Zoospores (D)

(C) Hypnospores

(D) Aplanosphore

Which of the following plants is generally described as living fossil?

(A) Cycas

602 986 (B) Cupressus (A)

(C) Taxus

(D) Ephedra

The transition zone between two different communities is called as

(A) Ecad

602 987 (B) Ecotype (C)

(C) Ecotone

(D) None of the above

‘Whip tail’ in cauliflower is caused due to the deficiency of

(A) Boron

602 988 (B) Molydenum (B)

(C) Copper

(D) Zinc

602 989 The phenomenon of ‘red snow’ is due to the alga (A)

(A) Chlamydomonas nivalis

(B) Nostoc commune

(C) Voucheria hamata

(D) Oscillatoria terebriformis

As water pollution increases in a stream, the values of BOD and COD change in the following manner

(A) BOD decreases and COD increases

602 990 (B) BOD increases and COD decreases (D)

(C) Both decrease

(D) Both increase

Viticulture is the branch of study of crop plants pertaining to

(A) ABA

602 991 (B) Inhibitor b (B)

(C) Ethylene

(D) Cyanide

The cork cambium in roots arises from the cells of

(A) primary phloem

602 992 (B) inner cortex (D)

(C) outer cortex

(D) pericycle

The edible portion in mulberry comprises of

(A) Pericarp

602 993 (B) Meso and endocarp (D)

(C) Endocarp only

(D) Perianth

The ‘black tongue’ disease is caused by the yeast

(A) Nematospora sp.

602 994 (B) Oospora sp. (B)

(C) Monosporella sp.

(D) Schizosaccharomyces sp.

In pteridium, the sorus is

(A) superficial and discontinuous

602 995 (B) superficial and continuous (D)

(C) marginal and discontinuous

(D) marginal and continuous

602 996 Genetically engineered bacteria are used in the commercial production of (C)

(A) thyroxine

(B) testosterone

(C) human insulin

(D) melatonin

Kreb’s cycle operates in

(A) cytoplasm

602 997 (B) ribosomes (C)

(C) mitochondria

(D) chloroplasts

Niche of a species in an ecosystem refers to its

(A) place of its occurrence

602 998 (B) competitive ability (D)

(C) centre of origin

(D) function at its place of occurrence

The most effective wavelength of visible light in photosynthesis in the region of which of the following:

(A) Green

602 999 (B) Yellow (C)

(C) Red

(D) Violet

Which part of the coconut produces coir?

(A) Seed coat

602 1000 (B) Pericarp (C)

(C) Mesocarp

(D) Epicarp

Which one of the following is known as ‘blue mould’?

(A) Penicillium

602 1001 (B) Erisiphe (A)

(C) Aspergillum

(D) Peziza

Agar-agar is extracted from

(A) Blue-green algae

602 1002 (B) Brown algae (D)

(C) Green algae

(D) Red algae

Petioles are modified into tendrils in

(A) Passiflora

602 1003 (B) Gloriosa (C)

(C) Clematis

(D) Antigonon

602 1004 Datura belongs to the family (D)

(A) Compositae

(B) Cruciferae

(C) Liliaceae

(D) Solanaceae

The cell organelle associated with photorespiration is

(A) glyoxysome

602 1005 (B) lysosome (A)

(C) mesosome

(D) ribosome

Hevea brasilensis is a source of

(A) rubber

602 1006 (B) spice (A)

(C) beverage

(D) dye

The botanical name of jute is

(A) Linus usitatissimum

602 1007 (B) Corchorus capsularis (B)

(C) Hibiscus sabdariffa

(D) Crotalaria juncea

Where is the Sugarcane Breeding Institute located?

(A) Lucknow

602 1008 (B) Mysore (C)

(C) Coimbatore

(D) Ludhiana

Cicer arietinum is known as

(A) black gram

602 1009 (B) green gram (C)

(C) Bengal gram

(D) dew gram

In plant cells, the number of Golgi bodies increases during

(A) cell division

602 1010 (B) food synthesis (A)

(C) translocation

(D) respiration

602 1011 Cinchona plant is also known as (C)

(A) Prickly bark

(B) Turmeric bark

(C) Peruvian bark

(D) Devil’s dung bark

Which one of the following is not a pteridophyte?

(A) Ginkgo

602 1012 (B) Selaginella (A)

(C) Polypodium

(D) Azolla

Mimosa pudica bears

(A) monocarpellary gynoecium

602 1013 (B) simple leaves (A)

(C) trimerous flower

(D) closed vascular bundles

Monadelphous condition describes

(A) aestivation of floral leaves

602 1014 (B) cohesion of stamens (B)

(C) placentation in ovary

(D) adhesion of stamens

A bicollateral vascular bundle means

(A) xylum and phloem arranged alternately

602 1015 (B) xylum surrounded by phloem (D)

(C) phloem surrounded by xylum

(D) phloem situated both on outer and inner face of xylum

Agrostology is related with the study of

(A) Agricultural growth

602 1016 (B) Epiphytes (C)

(C) Grasses

(D) Nematode diseases

A dihybrid ratio is

(A) 1 : 1 : 1 : 1

602 1017 (B) 3 : 1 (C)

(C) 9 : 3 : 3 : 1

(D) 9 : 5 : 1 : 1

Zygotic meiosis takes place in

(A) Selaginella

602 1018 (B) Spirogyra (B)

(C) Pinus

(D) Brassica

602 1019 The drug ‘Belladonna’ is obtained from (A)

(A) Atropa

(B) Ravoulfa

(C) Solanum

(D) Capsicum

Cristae help in

(A) respiration

602 1020 (B) transpiration (A)

(C) photosynthesis

(D) photo-oxidation

In xerophytic plants, leaves are arranged into spines in structures called

(A) Phyllode

602 1021 (B) Phylloclade (B)

(C) Cladode

(D) Stipule

Which type of fruit is found in sunflower?

(A) Siliqua

602 1022 (B) Silicula (D)

(C) Capsule

(D) Cypsella

Root cap is formed by

(A) Calyptra

602 1023 (B) Root nodules (C)

(C) Calyptrogen

(D) Algae

Still root is present in

(A) Banyan

602 1024 (B) Rice (C)

(C) Sugarcane

(D) Mango

Which green-house gas, other than methane, is being produced from the agricultural fields?

(A) Arsine

602 1025 (B) Sulphur dioxide (D)

(C) Ammonia

(D) Nitrous oxide

602 1026 Genes that are involved in switching on or off the transcription of a set of structural genes are called (B)

(A) Polymorphic genes

(B) Operator genes

(C) Redundant genes

(D) Regulatory genes

Which one of the following is used for the production of citric acid in industries?

(A) Lactocacillus bulgaris

602 1027 (B) Penicillium citrinium (C)

(C) Aspergillus niger

(D) Rhizopus nigricans

When a plant of F-1 generation is crossed with homozygous dominant plants, it is known as

(A) Simple cross

602 1028 (B) Test cross (C)

(C) Backcross

(D) Special cross

Which one of the following is not involved in the fertilization of ferns?

(A) Flagellated spores

602 1029 (B) Archegonia (D)

(C) Water

(D) Pollen tube

In soil, water available for plants, as

(A) Capillary water

602 1030 (B) Hygroscopic water (A)

(C) Gravitational water

(D) Chemically-bound water

Casparian stripes are found in

(A) Periderm

602 1031 (B) Endodermis (B)

(C) Epidermis

(D) Hypodermis

L-shaped chromosomes are called

(A) Sex-chromosomes

602 1032 (B) Acrocentric (D)

(C) Telocentric

(D) Sub-metacentric

In which of the following multiciliated antherozoids are present?

(A) Riccia and Funaria

602 1033 (B) Pteris and Cycas (B)

(C) Riccia and Pteris

(D) Marchantia and Riccia

602 1034 Red rust of tea is caused by (A)

(A) Cephaleuros

(B) Synchytrium

(C) Mucor

(D) Fusarium

In peritrichous bacteria, hairs are

(A) present at one end

602 1035 (B) present at both ends (D)

(C) absent

(D) present all over the body

The pyramid of biomass in a parasitic ecosystem is

(A) upright

602 1036 (B) inverted (A)

(C) rhomboidal

(D) linear

Finger millet is

(A) Sataria italic

602 1037 (B) Echinocloa colonum (D)

(C) Panicum miliare

(D) Eleucine coracana

Gum is secreted by one of the following

(A) Zanthaoxylum

602 1038 (B) Glycomis (C)

(C) Aegle

(D) Cusparia

The placentation in Rutaceae is

(A) axile or parietal

602 1039 (B) parietal or free-central (A)

(C) axile or free-central

(D) parietal or basal

Runners are found in

(A) Spiraea

602 1040 (B) Rosa (D)

(C) Poterium

(D) Fragaria

602 1041 The dye comes from which part of Toddalia asiatica (A)

(A) Root bark

(B) Heartwood

(C) Leaves

(D) Flowers

For chlorophyll formation in plants, the following elements are needed

(A) sodium and copper

602 1042 (B) calcium and potassium (C)

(C) iron and magnesium

(D) iron and calcium

The common transport form of sugar in plants is

(A) glucose

602 1043 (B) fructose (C)

(C) sucrose

(D) galactose

The kind of stomata generally found in the members of Solanaceae and Cruciferae are

(A) Anomocytic

602 1044 (B) Anisocytic (B)

(C) Paracytic

(D) Actinocytic

The leaves of Allium are

(A) Isobilateral

602 1045 (B) Bifacial (C)

(C) Cylindrical

(D) Equifacial

The site of meiotic division in higher plants is

(A) vegetative buds

602 1046 (B) root tip cells (D)

(C) stomatal cells

(D) spore mother cells

Which is the largest bud eaten?

(A) Celery

602 1047 (B) Cauliflower (C)

(C) Cabbage

(D) Cassava

Euglena is classified under one of the following kingdoms

(A) Animal

602 1048 (B) Plant (C)

(C) Protista

(D) Both plant and animal

602 1049 The character that appears in F1 is called (C)

(A) Recessive

(B) Incomplete dominance

(C) Dominant

(D) None of the above

HCN is released after bruises from

(A) apple

602 1050 (B) banana (D)

(C) custard

(D) tapioca