Which one of the following statements about all the four of Spongilla, leech, dolphin and penguin is correct?
1. | Penguin is homoiothermic while the remaining three are poikilothermic |
2. | Leech is a freshwater form while others are marine |
3. | Songilla has special collared cells called choanocytes, not found in the remaining three |
4. | All are bilaterally symmetrical |
Crocodile and Penguin are similar to Whale and Dogfish in which one of the following features?
1. Lay eggs and guard them till they hatch
2. Possess bony skeleton
3. Have gill slits at some stage
4. Possess a solid single-stranded central nervous system
1. | Scales on their hind limbs |
2. | Four-chambered heart |
3. | Two special chambers crop and gizzard in their digestive tract |
4. | Eggs with a calcareous shell |
What is common between parrot, platypus, and kangaroo?
1. Homeothermy
2. Toothless jaws
3. Functional post-anal tail
4. Oviparity
Which of the following pairs are correctly matched?
Animals | Morphological features | |
A. | Crocodile | 4-chambered heart |
B. | Sea urchin | Parapodia |
C. | Obelia | Metagenesis |
D. | Lemur | Thecodont |
1. A, C, and D
2, B, C, and D
3. Only A and D
4. Only A and B
In which one of the following sets of animals do all four give birth to young ones?
1. Lion, bat, whale, ostrich
2. Platypus, penguin, bat, hippopotamus
3. Shrew, bat, cat, kiwi
4. Kangaroo, hedgehog, dolphin, loris