Which of the following adaptations is seen in a cartilaginous fish?
1. Ampulla of Lorenzini
2. Lateral line system
3. Gill cover
4. Swim bladder
A peculiar type of sensory rod cell in the retina of the eye, called as the "green rod" is seen in
1. Cartilaginous fishes
2. Bony fishes
3. Amphibians
4. Cephalopod Mollusks
Which of the following is not a characteristic of reptiles?
| 1. | They lay amniote eggs |
| 2. | The skin is dry |
| 3. | Thoracic breathing |
| 4. | Endothermy |
The key characteristic that is unique in the birds is the presence of
1. A bony endoskeleton
2. Feathers
3. A muscular diaphragm
4. Scales
Which of the following is not a mammalian character?
| 1. | Presence of hair |
| 2. | Presence of mammary gland |
| 3. | Homodont dentition |
| 4. | Endothermy |
What is not true about monotremes?
| 1. | They lay shelled eggs |
| 2. | They have a cloaca |
| 3. | They have fur |
| 4. | They lack functional mammary glands |
The order of Mammals that include hoofed mammals with one or three toes is the
1. Perissodactyla
2. Artiodactyla
3. Edentata
4. Lagomorpha
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