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Botany Mcqs For PCS & CSS Exams

(i) The Green Algae belongs to:

(a) Cyanochloranta

(b) Chlorophycophyta

(c) Charophyta

(d) Cryptophycophyta

(e) None of these

(ii) If the gametes and gametangia in Fungi are of unequal sie! they are termed

as:

(a) "eterothallic

(b) "omothallic

(c) Isogametes

(d) Anisogametes

(e) None of these

(iii) Chlorophyll #d$ e%ists in:

(a) &yrrophyta

(b) &haeophyta

(c) Cryptophyta

(d) 'hodophyta

(e) None of these

(i) hich of the type of chlorophyll is rare in *anthophyceae and has been

determined in only t+o of its genera:

(a) chlorophyll #a$(b) chlorophyll #e$

(c) chlorophyll #b$

(d) chlorophyll #d$

(e) None of these

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() The A%oneme in an algal filament is composed of ,,,,,,,,,,,, fibrils:

(a) fie

(b) seen

(c) eleen

(d) one

(e) None of these

(i) An antibiotic called -Chlorellin. is deried from:

(a) Chara

(b) /pirogyra

(c) 0olo%

(d) Chlorella(e) None of these

(ii) In &a1istan! 0olo% is found abundantly in +ater ponds during the months of:

(a) 2arch and April

(b) 2ay and 3une

(c) Noember and 4ecember 

(d) 3anuary and February

(e) None of these

(iii) 5ecause of e%tracting ,,,,,, from +ater and depositing it in their +alls

different species of Chara are referred to as -/tone orts:

(a) /odium chloride

(b) Calcium carbonate

(c) &otassium sulphate

(d) &otassium nitrate

(e) None of these

(i%) &uccinia graminis causes ,,,,,,, in +heat:

(a) 6ello+ or stripe rust

(b) 5ro+n or orange leaf rust

(c) Black or stem rust

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(d) 7oose green smut

(e) None of these

(%) The ero and one stages of &uccinia graminis are produced on:

(a) Triticum aestium

(b) "ordeum 0ulgare

(c) /orghum 0ulgare

(d) 5arberis 0ulgaris

(e) None of these

(%i) A stable self8supporting association of a ,,,,,,, is termed as lichen:

(a) bryophyte 9 a pteridophyte

(b) mycobiont & a phycobiont

(c) plant 9 animal

(d) gymnosperm 9 angiosperm

(e) None of these

(%ii) quisetum is the only liing genus that belongs to:

(a) /phenopsida

(b) Caphalida(c) Chlorophycophyta

(d) Pteropsida

(e) None of these

(%iii) The genus quisetum comprises about ;< species distributed +orld8oer

e%cept in:

(a) urasia

(b) North America(c) /outh America

(d) Australasia

(e) None of these

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(%i) The members of class Filicinae in pteridophyta date bac1 to ,,,,,,, era:

(a) 2esooic

(b) &aleooic

(c) Cenooic

(d) Cambrian

(e) None of these

(%) 2arsilea quadrifolia belongs to the group of plants 1no+n as:

(a) 7ichens

(b) /edges

(c) Ferns

(d) /hrubs(e) None of these

(%i) ,,,,,,,, sho+ mar1ed affinities +ith both &teridophytes and angiosperms:

(a) 5ryophytes

(b) "ydrophytes

(c) Gymnosperms

(d) piphytes

(e) None of these

(%ii) ,,,,,,, has fie leaes in the spur:

(a) &inus longifolia

(b) &inus e%celsa

(c) &inus ro%berghii

(d) &inus +allichiana

(e) None of these

(%iii) The resting period bet+een pollination and fertiliation in Ta%as baccata

may be:

(a) Fie to ten months

(b) T+o to three months

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(c) =ne to t+o months

(d) Ten to eleen months

(%i%) In phedra! the oosphore undergoes repeated diisions to produce eight8

celled:

(a) >ygote

(b) >ygosphore

(c) ndosperm

(d) &ro8embryo

(e) None of these

(%%) 4ouble fertiliation is a characteristic of:

(a) Gymnosperms

(b) 5ryophytes

(c) Angiosperms

(d) &teridophytes

(e) None of these

(i) NA4" from the ?rebs cycle is appro%imately equal to:

(a) ; AT&(b) @ AT&

(c) AT&

(d) B AT&

(e) None of these

(ii) In mitochondrial electron transport chains! the final c acceptor is:

(a) ";=

(b) ";=;(c) NA4

(d) FA4

(e) None of these

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(iii) The moement of +ater from cell to cell ia plasmadesmata is called:

(a) /ymplastic

(b) Transmembrane

(c) Apoplastic

(d) Facilitated

(e) None of these

(i) In maie plant! the C=; fi%ation mechanism is called:

(a) C@ path+ay

(b) C path+ay

(c) CA2 path+ay

(d) C@ D C intermediate(e) None of these

() /alt8loing plants are 1no+n as:

(a) Glycophytes

(b) "alophytes

(c) *erophytes

(d) 2esophytes

(e) None of these

(i) ith the addition of solution to a liquid system! the +ater potential of the

system:

(a) Increases

(b) 4ecreases

(c) 'emains stable

(d) 'emains ariable

(e) None of these

(ii) The conersion of pyruate into acetyl CE A is called:

(a) Glycolysis

(b) Fermentation

(c) =%idatie carbo%ylation

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(d) 58=%idation

(e) None of these

(iii) 5et+een adenine and thymine! there are:

(a) T+o hydrogen bonds

(b) @ hydrogen bonds

(c) =ne hydrogen bond

(d) hydrogen bonds

(e) None of these

(i%) The stage of meiosis in +hich pairing of homologous chromosomes starts is

called:

(a) 7eptotene

(b) >ygotene

(c) 4iplotene

(d) &achytene

(e) None of these

(%) The site of chromosome on +hich a gene is located is called:

(a) Allele(b) 7ocus

(c) /ite

(d) Trait

(e) None of these

(%i) In a dihybrid cross! the ratio of F; generation is:

(a) :@:@:H

(b) @:H(c) H:;:H

(d) H:H

(e) None of these

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(%ii) hen a single gene has multiple effects! the phenomenon is called:

(a) Codominance

(b) pistasis

(c) &leiotropy

(d) Genostasis

(e) None of these

(%iii) 7amarc1$s theory of eolution +as published in:

(a) HEJ

(b) HE

(c) HE

(d) HHE(e) None of these

(%i) The boo1 -=rigin of /pecies. +as +ritten by:

(a) 7innaeus

(b) 7amarc1

(c) 2endel

(d) 4ar+in

(e) None of these

(%) The interaction bet+een algae and fungi to form lichen is called:

(a) &arasitism

(b) 2utalism

(c) Commensalism

(d) Amensalism

(e) None of these

(%i) The actual location or place +here an organism lies is called:

(a) "abitat

(b) cosystem

(c) Niche

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(d) 5iome

(e) None of these

(%ii) hich of the biomes has been increased in area by human actiitiesK

(a) /aanna

(b) Grassland

(c) 4esert

(d) Coniferous forest

(e) None of these

(%iii) hich one of the la1e ecosystem consists of phyto8and oo8plan1tonsK

(a) 7ittoral one

(b) 7imnetic one

(c) &rofundal one

(d) ater deep layers

(e) None of these

(%i%) hich of the follo+ing is a biotic component of an ecosystemK

(a) &roducers

(b) Consumers(c) 4ecomposers

(d) All of these

(e) None of these

(%%) A sequence of changes in the community structure of an ecosystem oer a

period of time is called:

(a) Natural selection

(b) /uccession(c) Neo84ar+inism

(d) 7amarc1ism

(e) None of these

ans

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H@AT&

;h;o

@symplast

cpath+ay

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(b) ";=;

(c) NA4

(d) FA4

(e) None of these

(iii) The moement of +ater from cell to cell ia plasmadesmata is called:

(a) /ymplastic

(b) Transmembrane

(c) Apoplastic

(d) Facilitated

(e) None of these

(i) In maie plant! the C=; fi%ation mechanism is called:

(a) C@ path+ay

(b) C path+ay

(c) CA2 path+ay

(d) C@ D C intermediate

(e) None of these

() /alt8loing plants are 1no+n as:

(a) Glycophytes

(b) "alophytes

(c) *erophytes

(d) 2esophytes

(e) None of these

(i) ith the addition of solution to a liquid system! the +ater potential of the

system:

(a) Increases

(b) 4ecreases

(c) 'emains stable

(d) 'emains ariable

(e) None of these

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(ii) The conersion of pyruate into acetyl CE A is called:

(a) Glycolysis

(b) Fermentation

(c) =%idatie carbo%ylation

(d) 58=%idation

(e) None of these

(iii) 5et+een adenine and thymine! there are:

(a) T+o hydrogen bonds

(b) @ hydrogen bonds

(c) =ne hydrogen bond

(d) hydrogen bonds

(e) None of these

(i%) The stage of meiosis in +hich pairing of homologous chromosomes starts is

called:

(a) 7eptotene

(b) >ygotene

(c) 4iplotene

(d) &achytene

(e) None of these

(%) The site of chromosome on +hich a gene is located is called:

(a) Allele

(b) 7ocus

(c) /ite

(d) Trait

(e) None of these

(%i) In a dihybrid cross! the ratio of F; generation is:

(a) :@:@:H

(b) @:H

(c) H:;:H

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(d) H:H

(e) None of these

(%ii) hen a single gene has multiple effects! the phenomenon is called:

(a) Codominance

(b) pistasis

(c) &leiotropy

(d) Genostasis

(e) None of these

(%iii) 7amarc1$s theory of eolution +as published in:

(a) HEJ

(b) HE

(c) HE

(d) HHE

(e) None of these

(%i) The boo1 -=rigin of /pecies. +as +ritten by:

(a) 7innaeus

(b) 7amarc1

(c) 2endel

(d) 4ar+in

(e) None of these

(%) The interaction bet+een algae and fungi to form lichen is called:

(a) &arasitism

(b) 2utalism

(c) Commensalism

(d) Amensalism

(e) None of these

(%i) The actual location or place +here an organism lies is called:

(a) "abitat

(b) cosystem

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(c) Niche

(d) 5iome

(e) None of these

(%ii) hich of the biomes has been increased in area by human actiitiesK

(a) /aanna

(b) Grassland

(c) 4esert

(d) Coniferous forest

(e) None of these

(%iii) hich one of the la1e ecosystem consists of phyto8and oo8plan1tonsK

(a) 7ittoral one

(b) 7imnetic one

(c) &rofundal one

(d) ater deep layers

(e) None of these

(%i%) hich of the follo+ing is a biotic component of an ecosystemK

(a) &roducers

(b) Consumers

(c) 4ecomposers

(d) All of these

(e) None of these

(%%) A sequence of changes in the community structure of an ecosystem oer a

period of time is called:

(a) Natural selection

(b) /uccession

(c) Neo84ar+inism

(d) 7amarc1ism

(e) None of thes

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 /&/C!&&/C 7ecturer 5otany 2CLs &ast &apers

(H) The spores in bryophytic plant represent the first cell of the:(a) Gametophytic generation

(b) /porophytic generation

(c) Ase%ual generation

(d) All of these

(e) None of these

(;) Algal members of classes uglenophyceae and chlorophyceae are similar in

the:

(a) Cell +all structure

(b) 'esere food(c) &igment composition

(d) /tructure of flagella

(e) None of these

(@) Crystocarp is a structure deeloped after fertiliation in:

(a) 5lue green algae

(b) Actinomycetes

(c) 5ryophetes

(d) 'ed algae

(e) None of these() 'ice belongs to family:

(a) 2alaceae

(b) Fabiaceae

(c) /olonaceae

(d) &oaceae

(e) None of these

(

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(c) *ylem

(d) &hloem

(e) None of these

(J) hich one of these is a parasite:

(a) /unflo+er (b) 5egonia

(c) 5iden

(d) 5rasica

(e) None of these

() /porophytic generation is borne upon gametophyte and is dependent on it

This feature is present in:

(a) Cycas

(b) Adiantam

(c) quisetum(d) All of these

(e) None of these

() 4ouble fertiliation is a typical characteristic of:

(a) Algae

(b) Fungi

(c) 5ryophytes

(d) Angiosperm

(e) All of these

(HE) 2archantia reproduces egetatiely by:(a) Apospory

(b) Gemma Cup

(c) 5udding

(d) All of these

(e) None of these

(HH) &lant cell +all is composed of:

(a) Cellulose

(b) &olypeptides

(c) &hospholipids(d) /tarch

(e) None of these

(H;) /tele in +hich primary ascular tissues are arranged in discrete strands

around a pit is called:

(a) &rostele

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(b) 'adial stele

(c) Centric stele

(d) ustele

(e) None of these

(H@) In +hich the follo+ing edible part is obtained from the 'hiome:(a) &otato

(b) Ginger 

(c) /ugar beet

(d) =nion

(e) None of these

(H) Fertiliation +ithin an unopened flo+er is called:

(a) Cleistogramy

(b) Cleistocary

(c) Isogamy(d) =ogamy

(e) None of these

(Hygote formation

(c) Cambium formation

(d) All of these

(e) None of these

(HB) dible fungus is:(a) &enicillium

(b) Agaricus

(c) Aspergillus

(d) &hythium

(e) None of these

(HJ) /peciation is:

(a) =rigin of species

(b) olution of species

(c) Identification of species(d) &reseration of species

(e) None of these

(H) Collectie name gien to sporangia in fern is:

(a) /orus

(b) /porangium

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(c) /pathe

(d) /porangiophore

(e) None of these

(H) /mall! spherical protein bodies surrounded by starch deposits in

chloroplasts of many algae are:(a) 7ecoplasts

(b) 'ibosomes

(c) 2icrosomes

(d) &yenidium

(e) None of these

(;E) "eterocysts are present in:

(a) 0olo%

(b) Clostridium

(c) Cycas(d) 8Coli

(e) None of these

(;H) nyme Fumarase conert fumaric acid into:

(a) Citric acid

(b) Isocitric acid

(c) lactic acid

(d) Glutamic acid

(e) None of these

(;;) &lants gro+ing under saline conditions are:(a) "olophytes

(b) 2esophytes

(c) "ygrophytes

(d) "alophytes

(e) None of these

(;@) The first product of C=; fi%ation in C@ plants is:

(a) &hosphoglyceric acid

(b) Glycolic acid

(c) Citric acid(d) Glutamic acid

(e) None of these

(;) 2utations are most li1ely to be caused by:

(a) HAA

(b) C=;

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(c) 4e%trose

(d) Glycine

(e) None of these

(;

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(c) &hysiognomy

(d) &attern

(e) None of these

(@H) A plasmid is a:

(a) 4NA(b) 'AN

(c) &rotein

(d) 2icrosome

(e) None of these

(@;) The total Genetic material +ithin a cell is:

(a) Gene ban1

(b) Genetic load

(c) Genome

(d) Genetic 2ar1er (e) None of these

(@@) 'ibsomal 'NA helps in:

(a) 'eplication

(b) Transcription

(c) Translation

(d) Translocation

(e) None of these

(@) hich one of the follo+ing ions plays most important role in stomatal

moementK(a) ?

(b) Ca (c) ClD

(d) Na

(e) None of these

(@

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(c) ;

(d) @B

(e) None of these

(@J) =pen sea constituting about EO of total ocean surface is called:

(a) &elgaic one(b) 7ittoral one

(c) Intertida one

(d) Neritic one

(e) None of these

(@) hich one of the follo+ing 'NAs is non8genetic and brings amino acids to

the site of protein synthesisK

(a) m 'NA

(b) t 'NA

(c) hn 'NA(d) pre8r 'NA

(e) None of these

(@) Transfer of material ! from higher concentration to lo+er concentration

across semipermeable membrane is called:

(a) 2ass flo+

(b) =smosis

(c) Ascent of /ap

(d) 4iffusion

(e) None of these(E) =ptimum phosphorus upta1e by roots ta1es place at:

(a) Neutral p"

(b) Acidic p"

(c) Al1aline p"

(d) All of these

(e) None of these

(H) The Green Algae belongs to:

(a) Cyanochloranta

(b) Chlorophycophyta(c) Charophyta

(d) Cryptophycophyta

(e) None of these

(;) If the gametes and gametangia in Fungi are of unequal sie! they are termed

as:

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(a) "eterothallic

(b) "omothallic

(c) Isogametes

(d) Anisogametes

(e) None of these(@) Chlorophyll #d$ e%ists in:

(a) &yrrophyta

(b) &haeophyta

(c) Cryptophyta

(d) 'hodophyta

(e) None of these

() hich of the type of chlorophyll is rare in *anthophyceae and has been

determined in only t+o of its genera:

(a) chlorophyll #a$(b) chlorophyll #e$

(c) chlorophyll #b$

(d) chlorophyll #d$

(e) None of these

(

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ecause of e%tracting ,,,,,, from +ater and depositing it in their +alls different

species of Chara are referred to as -/tone orts:

(a) /odium chloride

(b) Calcium carbonate

(c) &otassium sulphate(d) &otassium nitrate

(e) None of these

() &uccinia graminis causes ,,,,,,, in +heat:

(a) 6ello+ or stripe rust

(b) 5ro+n or orange leaf rust

(c) 5lac1 or stem rust

(d) 7oose green smut

(e) None of these

(