Zoology Practice MCQs (Most Important and Expected Questions) AIIMS Set 12

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Q.16 In the days just after its formation the earth had:

(a) Reducing atmosphere(b) Oxidative atmosphere(c) Both „a‟ and „b‟(d) None of these

Answer: A

Q.17 Zygotes containing “XY” are females in:

(a) Drosophila(b) In moths(c) In grasshoppers(d) None of these

Answer: A

Q.18 The “Y” Chromosomes is sexually neutral in:

(a) Man(b) In Drosophila(c) In moth(d) None of these

Answer: D

Q.19 Marsupial are found in:

(a) Only Australian region(b) In near arctic and Neotropical regions(c) Both „a‟ and „b‟(d) None of these

Answer: D

Q.20 In which stage of Meiosis Cento mere of each dyad divides?

(a) Metaphase I(b) Metaphase II(c) Anaphase I(d) Anaphase II(e) None of these

Answer: B

Q.1 Coelom is the body cavity originating from

a) ectodermb) mesodermc) endodermd) none of these

Answer: B

Q.2 Cytopharynx is the structure present in

a) Amoebab) parameciumc) Euglenad)foraminiferse) none of these

Answer: B

Q.3 Gemmules are the reproductive structures produced in

a) spongesb) Annelidsc) Arthropodsd) coelenterates

Answer: A

Q.4 Comb plates are very specific structures of

a) coelenteratesb) Arthropodac) ctenophorad) none of these

Answer: C

Q.5 Nerve net is present in coelenterates at

a) in endodermisb) below upper epidermisc) in mesoglead) not present in coelenterates

Answer: B

Q.6 Circulatory system in insects is

a) Closed type

b) open type

c) lymphic type

d) All of these

Answer: B

Q.7 Silk is produced by silkworm

a) larvab) adultc) pupad) All of these

Answer: A

Q.8 The basic function of a flame cell is

a) excretionb) osmoregulationc) digestiond) none of these

Answer: A

Q.9 The scale in fishes are

a) ectodermalb) endodermalc) mesodermald) different in different fishes

Answer: C