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 |
Hollow-air filled bones (pneumatic bones) occur in:
| 1. | Mammals | 2. | Reptiles |
| 3. | Urodela | 4. | Aves |
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
Birds and mammals share one of the following characteristics as a common feature.
1. Pigmented skin
2. Pneumatic bones
3. Viviparity
4. Warm blooded body
Which one of the following sets of animals share a four chambered heart?
| 1. | Amphibian, Reptiles, Birds |
| 2. | Crocodiles, Birds, Mammals |
| 3. | Crocodiles, Lizards, Turtles |
| 4. | Lizards, Mammals, Birds |
Match the following group of organisms with their respective distinctive characteristics and select the correct option:
|
Organisms |
Characteristics |
||
|
(a) |
Platyhelminthes |
(i) |
Cylindrical body with no segmentation |
|
(b) |
Echinoderms |
(ii) |
Warm blooded animals with direct development |
|
(c) |
Hemichordates |
(iii) |
Bilateral symmetry with incomplete digestive system |
|
(d) |
Aves |
(iv) |
Radial symmetry with indirect development |
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iii) | (iv) | (i) | (ii) |
| 2. | (ii) | (iii) | (iv) | (i) |
| 3. | (iv) | (i) | (ii) | (iii) |
| 4. | (i) | (ii) | (iii) | (iv) |
Which one of the following organisms bears hollow and pneumatic long bones?
1. Macropus
2. Ornithorhynchus
3. Neophron
4. Hemidactylus
Match the following columns and select the correct option :
| Column-I | Column-II | ||
| (a) | Aptenodytes | (i) | Flying fox |
| (b) | Pteropus | (ii) | Angel fish |
| (c) | Pterophyllum | (iii) | Lamprey |
| (d) | Petromyzon | (iv) | Penguin |
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iii) | (iv) | (ii) | (i) |
| 2. | (iii) | (iv) | (i) | (ii) |
| 3. | (iv) | (i) | (ii) | (iii) |
| 4. | (ii) | (i) | (iv) | (iii) |