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 one of the following groups of three animals each is correctly matched with their one characteristic morphological feature?
Animals |
Morphological feature |
(a) Liver fluke, sea anemone, sea cucumber |
Bilateral symmetry |
(b) Centipede, prawn, sea urchin |
Jointed appendages |
(c) Scorpion spider, cockroach |
Ventral solid central nervous system |
(d) cockroach locust, Taenia |
Metameric segmentation |
1. a
2. b
3. c
4. d
Which one of the following is a matching pair of a body feature and the animal possessing it?
1. Post-anal-tail - Octopus
2. Ventral Central nervous system - Leech
3. Pharyngeal gills slits absent in embryo - Chamaeleon
4. Ventral heart - Scorpion
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
Metameric segmentation is characteristic of:
1. Platyhelminthes and Arthropoda
2. Echinodermata and Annelisa
3. Annelida and Arthropoda
4. Mollusca and Chordata
Which one of the following has an open circulatory system?
1. Pheretima
2. Periplaneta
3. Hirudinaria
4. Octopus
Biradial symmetry and lack of cnidoblasts are the characteristics of:
1. Starfish and sea anemone
2. Ctenoplana and Beroe
3. Aurelia and Paramecium
4. Hydra and starfish