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
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
Two common characteristics found in centipedes, cockroaches, and crabs are:
1. compound eyes and anal cerci
2. joined legs and chitinous exoskeleton
3. green gland and tracheae
4. book lungs and antennae
Which one of the following has an open circulatory system?
1. Pheretima
2. Periplaneta
3. Hirudinaria
4. Octopus
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 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
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 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
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 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