Closed circulatory system is not found in

(1) octopus

(2) tunicates

(3) echinoderms

(4) squids

Subtopic:  Phylum Echinodermata |
 55%
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Polyp phase is absent in the life cycle of:

(1) Hydra

(2) Hormiphora

(3) Pennatula

(4) Physalia

Subtopic:  Phylum Coelenterata |
 50%
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Which of the following is a fish?

(1) Flying fish

(2) Jelly fish

(3) Devil fish

(4) Star fish

Subtopic:  Comparative study of Cartilagenous & Bony Fishes |
 74%
From NCERT
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Which of the following is not an annelid?

1. Leech

2. Earhtworm

3. Sea mouse

4. Sea cucumber

Subtopic:  Phylum Echinodermata |
 81%
From NCERT
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Buoyancy in a bony fish is maintained with the help of

(1) streamlined body

(2) paired fins

(3) swim bladder

(4) all the above

Subtopic:  Comparative study of Cartilagenous & Bony Fishes |
 62%
From NCERT
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In which of the following animals the adults have pentamerous radial symmetry while their larvae are bilaterally symmetrical?

(1) Arthropods

(2) Molluscs

(3) Echinoderms

(4) Annelids

Subtopic:  Phylum Echinodermata |
 93%
From NCERT
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Botryoidal tissue is found in

(1) hirudina

(2) polychaeta

(3) oligochaeta

(4) all of these.

Subtopic:  Phylum Annelida |
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Which of the following is an egg laying mammal?

(1) Kangaroo

(2) Platypus

(3) Penguin

(4) Whale

 

Subtopic:  Study of Aves & Mammals |
 90%
From NCERT
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Class Crustacea has following features:

(1) Cephalothorax, book lungs, chitinous exoskeleton

(2) Head and thorax, biramous appendages, book lungs

(3) Head and thorax, book lungs, chitinous exoskeleton

(4) Cephalothorax, biramous appendages, gills

Subtopic:  Phylum Arthropoda |
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Which of the following is wrongly matched?

(1) Haemoglobin in mammals – RBC

( 2) Haemozoin – Plasmodium cytoplasm

(3) Haemocyanin – leeches

(4) Haemoglobin dissolved in blood – Pheretima

Subtopic:  Phylum Annelida | Phylum Mollusca |
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