Identify the incorrectly matched class of vertebrates with the features given :
1. Fishes - Jaws and paired appendages (except Agnathans); Single loop circulation; Gills
2. Amphibians - Legs ( except in Caecilian); three chambered heart; no pulmonary veins
3. Reptiles - Amniotic egg; dry skin, thoracic breathing
4. Birds - Feathers; flight skeleton; endothermy
2. Tunicate
3. Moth
4. Starfish
2. Reptilia
3. Aves
4. Osteichthyes
1. Macropus
2. Chelone
3. Camelus
4. Psittacula
Assertion : Claspers of cartilage fishes are analogous to penis of human male.
Reason : Both act as copulatory organs and transfer the sperms into female.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Which of the following characteristic features always hold true for the corresponding group of animals?
| (a) | Viviparous | (1) | Mammalia |
| (b) | Possess a mouth with an upper and a lower jaw | (2) | Chordata |
| (c) | 3- chambered heart with one incompletely divided ventricle | (3) | Reptilia |
| (d) | Cartilaginous - Endoskeleton | (4) | Chondrichthyes |
1. a
2. b
3. c
4. d
2. Blue whale
3. Sea-horse
4. Gangetic shark
Assertion : Starfish moves through crawling.
Reason : Starfish utilise a flow of water over the surface, for movement.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Which of the following characteristics is mainly responsible for the diversification of insects on land:
2. Bilateral symmetry
3. Exoskeleton
4. Eyes
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