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Important Questions & Answers on Zoology Optional Paper for APSC(Assam Public Service Commission) Prelims | GkSeries

(1) Schizont stage of Plasmodium vivax in man is found in
1 erythrocytes
2 erythrocytes and liver cells
3 liver cells only
4 erythrocytes, liver cells and spleen
Answer: erythrocytes and liver cells
(2) Evolutionary sequence of canal system in sponges is
1 sycon-ascon-leucon
2 leucon-sycon-ascon
3 ascon-sycon-leucon
4 sycon-leucon-ascon
Answer: ascon-sycon-leucon

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(3) Gonads of Obelia occur
1 in hydrula stage
2 in bases of tentacles of medusa
3 on blastocyst
4 in radial canal of medusa
Answer: in radial canal of medusa
(4) A rhabditiform larva is found in the life cycle of
1 Hydra
2 Ascaris
3 tapeworm
4 liver fluke
Answer: Ascaris
(5) Sexual dimorphism is distinct in Ascaris, because of
1 body colour
2 buccal margins
3 pineal setae
4 lips
Answer: pineal setae
(6) Common feature of earthworm and cockroach is
1 hermaphroditism
2 ventral nerve chord
3 moulting of cuticle
4 excretion by nephncia

Answer: ventral nerve chord
(7) In Paloemon, statocyst is situated on the
1 antenule
2 maxillae
3 maxillulae
4 antennae

Answer: antenule
(8) Golgi body is found in
1 RBC of man
2 all the cells
3 bacterial cells
4 all cells, except RBC and bacterial cells

Answer: all cells, except RBC and bacterial cells
(9) Presence of choanocytes is the characteristic of
1 Annelida
2 Porifera
3 Coelenterata
4 None of the above

Answer: Porifera
(10) The coral species which is extensively used in jewellery is
1 Corallium rubrum
2 Anthocodium indicum
3 Gorgonia flagellum
4 Fungia sp.

Answer: Corallium rubrum
(11) Spicules in sponges are secreted by
1 collenocytes
2 archaeocytes
3 scleroblasts
4 pinococytes

Answer: scleroblasts
(12) Cysticercus larva is found in
1 Scypha
2 Obelia
3 Taenia
4 Fasciola

Answer: Taenia
(13) Ambulacral system is basically found in
1 sponges
2 coelenterates
3 aquatic arthropods
4 echinodermata

Answer: echinodermata
(14) In sponges, nutrition, respiration and excretion depend upon
1 circulatory system
2 ambulacral system
3 haemocoelomic system
4 canal system

Answer: canal system
(15) Larva of Schistosoma is
1 cercaria
2 planula
3 cysticercus
4 Muller's larva

Answer: cercaria

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