Q. No.Which one of the following groups of animals is bilaterally symmetrical and triploblastic?
1. Coelenterates (cnidarians)
2. Ascheminthes (roundworms)
3. Ctenophores
4. Sponges
Which one of the following pair of animals comprises 'jawless fishes'?
1. Lampreys and eels
2. Mackerals and rohu
3. Lampreys and hagfishes
4. Guppies and hagfishes
1. Closed circulatory system
2. Segmentation
3. Pseudocoelom
4. Ventral nerve cord
| 1. | Arthropoda - The body is divided into a head, thorax, abdomen and respiration by mouth |
| 2. | Chordata - Notochord at some stage and separate anal and urinary openings to the outside |
| 3. | Echinodermata – Pentamerous radial symmetry and mostly internal fertilization |
| 4. | Mollusca - Normally oviparous and developed through a trochophore or veliger larva |
Which one of the following pairs is mismatched?
| 1. | Pila globosa - pearl oyster | 2. | Apis indica- honey bee |
| 3. | Laccifer lacca- lac insect | 4. | Bombyx mori- silkworm |
What is common between parrot, platypus, and kangaroo?
1. Homeothermy
2. Toothless jaws
3. Functional post-anal tail
4. Oviparity
| 1. | absence of true coelom but the presence of metamerism |
| 2. | presence of neither true coelom nor metamerism |
| 3. | presence of true coelom but the absence of metamerism |
| 4. | presence of true coelom and metamerism (metamerisation) |
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
What is true about Nereis, Scorpion, Cockroach, and Silverfish?
1. They all have jointed paired appendages
2. They all possess a dorsal heart
3. None of them is aquatic
4. They all belong to the same phylum
Which one of the following is a matching set of a phylum and its three examples?
1. Cnidaria- Bonellia, Physalia, Aurelia
2. Platyhelminthes- Planaria, Schistosoma, Enterobius
3. Mollusca- Loligo, Teredo, Octopus
4. Porifera- Spongilla, Euplectella, Pennatula
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