In which one of the following, the genus name, its two characters and its phylum are not correctly matched, whereas the remaining three are correct?
Genus Name | Two Characters | Phylum | ||
1. | Pila | (i) (ii) |
Body segmented Mouth with Radula |
Mollusca |
2. | Asterias | (i) (ii) |
Spiny skinned Water Vascular System |
Echinodermata |
3. | Sycon | (i) (ii) |
Pore bearing Canal system |
Porifera |
4. | Periplaneta | (i) (ii) |
Jointed appendages Chitinous exoskeleton |
Arthropoda |
The figure shows four animals (a), (b), (c) and (d). Select the correct answer with respect to a common characteristic of two of these animals:
(a) | (b) | ||
(c) | (d) |
1. (c) and (d) have a true coelom
2. (a) and (d) respire mainly through body wall
3. (b) and (c) show radial symmetry
4. (a) and (b) have cnidoblasts for self-defence
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 |
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