biological classification class 11 mcq

Multiple choice questions on biological classification 

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MCQs on biological classification for NEET

Multiple choice questions on biological classification


1) Euglenoids Show wriggling movements known as________

(a) Paraboly

(b) Metaboly

(c) Emboly

(d) Epiboly

Answer -: b

2) lyme disease is caused by members of __________

(a) Actnomycetes  

(b) RicKickettsiae

(c) chlamydia 

(d) Spirochaetes

Answer -: b

3) pseudomurein is found in the cells wall of the following group of bacteria 

(a) N2 - fixing bacteria 

(b) Biogas producing bacteria

(c) Antibiotices producing bacteria

(d) None ot these

Answer -: b

3) In archaecbacteria N-acetyl muranmice acid is replaced by which of the following  chemical compound?

(a) Teichoic acid

(b) N-aceyl glucosamaine

(c) N-Acetyl talosaminuronic acid

(d) D-alanine

Answer -: c

4) When viral DNA gets detatched from bacterial genome and starts  replicating independent of the bacterial genome forming new virus particles, Such as type of cycle during transduction is known as_________

(a) Lysogenic cycle 

(b) Lytic cycle

(c) Sexduction

 (d) Abortive cycle

Answer -: b

5) Transverse  section of bacterial flagellum shows which of the following patterns? 

(a) Unistranded

(b) 9+2

c) 1+0

(d) Multistranded

Answer -: a

6) The bacterium Acetobacter aceti performs which of the following functions?

(a) Conversion ot alcohol to acetic acid

(b) Conversion of acetic acid to alcohol

(c) Conversion of sugar solutions to acetic acid

(d) Conversion of lactic acid to acetic acid

Answer -: a

7) Mycolic acid is present in the cell wall of pathogen causing_________

(a) Cholera

(6) Typhoid

(C) Tuberculosis

(d) Tetanus

Answer -: c

8)  Most widely used bioweapon is________

a) Bacillus subtilis

(b) Pseudomonas putida

(C) Bacilus anthracis

d) None of these

Answer -: c

9) Set of bacterial diseases is________

(a) Diptheria, leprosy and plague

(b) Malaria, mumps and polio

(c) tetanus,  TB and malaria 

(d) cholera, typhoid and mumps

Answer -:  a

10) The Mycoplasma are organism that completely lack of cell wall. These are_______

(a) Obligale Aerobe

(b) Facultative Anaerobe

(C) Obligate Anaerobe

(d) Facultative Aerobe

Answer -: b

11) Euglena is a predator of small organisms

a) In presence of light

(b) Due to holopytic nutrition

(c) Due to mixotrophic nutrition

(d) ln absence of fight

Answer -: d

12) Chrysophytes are photosynthetic protists. These________

(a) Are not present in fresh water

(b) Float actively in water currents

(c) Having destructible cell wall

(d) Have two thin overlapping shels

Answer -: d

13) Gonyaulax undergo rapid muplication that they make the sea appear red. this phenomenon is called as________

(a) Reds sea

(b) Red tide

(c) Red snow

(d) Red drop

Answer -: b

14) How many dikaryotic spore are formed on  alternate host in the life cycle of puccinia gramunis tritic ?

(a) 4

(b) 2

(c) 1

(d) 3

Answer -: c

15) Basal body in flalagellum of gram negative bacteria having_________

(a) S & M-rings in distal set

(b) S &P-rings between the M& L-rings

(c) L& M-rings between the P &S- rings

(d)  L&P- rings in proximal set

Answer -: b

16)  How many radiating rows of vertical plates are present in the under surface ot pilceus n gill fungi? 

(a) 3-6

(b) 30-60

(C) 300-600

(d) 3000-6000

Answer -: c

17) ln the button stage of Agaricus life cycle the pileus is connected to stipe by a membrane called __________

a) Annulus

(b) Velum

(C) Parenthosome 

(d) Woronin body

Answer -: b

18) In Gram staining technique, the following chemicals are used ln this process. Find the correct sequence

(a) A-> B ->C

(b) C->B-> A

(c) B->C ->A

(d) B->A->C

Answer -: c

19) Carl Woese placed all the prokaryotes in_________

(a) 3 domains 

(b) 1 domain

(c) 6 domains

(d) 2 domains

Answer -: d

20) fruiting bodies in sexual life cycle of Agaricus 

(a) Are called as ascocarps

(b)Have diploid and dikryotic cells

(c) Are cream coloured to pinkish brown

(d) produces exogenous mitospores

Answer -: b

21)  Kieselghur is employed for a variety oF commercial purposes. It is formed by the deposition of_________

(a) Siliceous frustules

(b) Calcareous irustules

(C) Pecto-cellulosic wall

(d) Glycoprotein wal

Answer -: a

22) Protistans which are commonly known as Jewels of the plant Kingdom, slow movement by_______

(a) Mucilage propulsion

b) Presence of high molecular weight lipids

(C) Osmoregulatory structure

(d) Isokont flagella

Answer -: a

23) Network of fine threads is present in the sporangium of ____ for _____

(a) Plasmodial slime mold, spores dispersal

(b) Acellular slime mold, conduction

(C) Cellular slime mold, mechanical support

(d) Communal slime mold, rupturing ot sporangium

Answer -: a

24) Monokaryotic hyphae with septa constitutes the thalloid plant body or mycelium in the membres of class_______

(a) zygomycetes

 (b) Phycomycetes

(c) Oomycetes

(d) Ascomycetes

Answer -: d

25) Yeast without ascus fomation is_______

(a) Saccharomyces

(b) Candida

(C) SchizoSaccharomyces

(d) Saccharomycoides

Answer -: b

26) Which of the following is mainly a mode of multiplication n bacteria ?

(a) Endospore formation

(b) Binary fission

(C) genetic recombinaton

(d) Parasexuality

Answer -: b

27) Cingulum is________

(a) Stiff cellulosic plates of cell wall in


(b) Siliceous cell wall (frustule) of diatoms

(e) Longitudinal groove of dinoflagellates

(d) Trans verse groove of dinoflagellates

Answer -: d

28) The spores are dispersed by____ in slime molds.

(a) Water current

(b) Explosive mechanism

(c) Air current

(d) Catapult mechanism

Answer -: c

29) Klebsiella, a nitrogen fixing eubacteria, form leaf nudules in_________

(a) Pavetta and DioScorea

(6) Dioscorea and Casuarina

(c) Casuarina and Psychotria

(d) Psychotria and Neptunia

Answer -: a

30) protists have diverse mode of nutrition The type missing in protists is __________

(a) chemosynthetic

(b) Holozoic

(c) parasitic 

(d) photosynthetic 

Answer -: a