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Wednesday, April 10, 2024

NEET Biology Previous year MCQ Bank With Answer Key - 09

161. Which of the following environmental conditions are essential for optimum growth of Mucor on a piece of bread?

A. Temperature of about 25°C

B. Temperature of about 5° C

C. Relative humidity of about 5%

D. Relative humidity of about 95%

E. A shady place

F. A brightly illuminated place Choose the answer from the following options:


(1) B, C and F only

(2) A, D and E only

(3) A, C and E only

(4) B, D and E only


162. The thalloid body of a slime mould (Myxomycetes) is known as

(1) mycelium

(2) plasmodium

(3) protonema

(4) fruiting body

163. Which of the following statements regarding cilia is not correct?

(1) Cilia contain an outer ring of nine doublet microtubules surrounding two single microtubules

(2) Cilia are hair-like cellular appendages

(3) The organized beating of cilia is controlled by fluxes of Ca2+ across the membrane

(4) Microtubules of cilia are composed of tubulin


164. Which antibiotic inhibits interaction between RNA and mRNA during bacterial protein synthesis?

(1) Tetracycline

(2) Neomycin

(3) Erythromycin

(4) Streptomycin


165. There exists a close association between the alga and the fungus within a lichen. The fungus

(1) fixes the atmospheric nitrogen for the alga

(2) provides protection, anchorage and absorption for the alga

(3) releases oxygen for the alga

(4) provides food for the alga


166. Which one of the following is a slime mould?

(1) Anabaena

(2) Physarum

(3) Rhizopus

(4) Thiobacillus


167. Ergot of rye is caused by a species of

(1) claviceps

(2) uncimula

(3) phytophthora.

(4) ustilago


168. Which pair of the following belongs to Basidiomycetes

(1) Morchella and mushrooms

(2) puffballs and Claviceps

(3) birds nest fungi and puffballs.

(4) peziza and stink borns


169. Which one of the following statements about mycoplasma is wrong?

(1) They cause diseases in plants

(2) They are pleomorphic

(3) They are also called PPLO.

(4) They are sensitive to penicillin


170. The causative agent of mad-cow disease is a

(1) Bacterium

(2) Prion

(3) Virus

(4) Worm

171. Which one is the wrong pairing for the disease and its causal organism?

(1) Root-knot of vegetables - Meloidogyne sp

(2) Black rust of wheat - Puccinia graminis

(3) Late blight of potato - Alternaria solani

(4) Loose smut of wheat - Ustilago nuda


172. Thermococcus, Methanococcus and Methanobacterium exemplify:

(1) Bacteria whose DNA is relaxed or positively supercoiled but which have

a cytoskeleton as well as mitochondria

(2) Archaebacteria that contain protein homologous to eukaryotic core histones

(3) Bacteria that contain a cytoskeleton and ribosomes

(4) Archaebacteria that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercoiled


173. In the light of recent classification of living organisms into three domains of life (bacteria, archaea and eukarya), which one of the following statements is true about archaea?

(1) Archaea completely differ from both prokaryotes and eukaryotes

(2) Archaea resemble eukarya in all respects

(3) Archaea completely differ from prokaryotes.

(4) Archaea have some novel features that are absent in other prokaryotes and eukaryotes


174. Bacterial leaf blight of rice is caused by a species of

(1) Alternaria

(2) Xanthomonas

(3) Erwinia

(4) Pseudomonas


175. Which one of the following is linked to the discovery of Bordeaux mixture as a popular fungicide?

(1) Loose smut of wheat

(2) Bacterial leaf blight of rice

(3) Black rust of wheat

(4) Downy mildew of grapes


176. Membrane-bound organelles are absent in:

(1) Chlamydomonas

(2) Saccharomyces

(3) Plasmodium

(4) Streptococcus


177. Ringworm in humans is caused by:

(1) Nematodes

(2) Bacteria

(3) Viruses

(4) Fungi


178. Single-celled eukaryotes are included in:

(1) Archaea

(2) Protista

(3) Monera

(4) Fungi


179. Mannitol is the stored food in:

(1) Gracillaria

(2) Porphyra

(3) Chara

(4) Fucus


180. Phylogenetic system of classification is based on:

(1) floral characters

(2) morphological features

(3) evolutionary relationships

(4) chemical constituents

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