What is not true for a generalized mollusc?
| 1. | Body segmented into head, visceral mass and foot. |
| 2. | A rasping tongue like organ – radula present. |
| 3. | Mantle cavity with gills |
| 4. | Excretory structures – nephridia |
Match each item in Column I with one item in Column II and chose your answer from the codes given below:
|
Column I Feature |
Column II Phylum |
|
(a) Lateral line system (b) Water vascular system (c) Radula (d) Comb plates (e) Parapodia |
(i) Ctenophora (ii) Mollusca (iii) Echinodermata (iv) Osteichthyes (v) Annelida |
Codes
(a) (b) (c) (d) (e)
1. (i) (ii) (iii) (iv) (v)
2. (iv) (iii) (ii) (i) (v)
3. (iv) (iii) (i) (v) (ii)
4. (iii) (ii) (i) (v) (iv)
Consider the following sets of some animals. The set that consists of all animals belonging to the same phylum is:
1. Pinctada, Aplysia, Chaetopleura
2. Dentallium, Pila, Echinus
3. Asterias, Antedon, Ascidia
4. Adamsia, Gorgonia, Pleurobrachia
In which one of the following, the genus name, its two characters and its phylum are not correctly matched, whereas the remining three are correct?
| Genus Name | Two characters | Phylum |
| 1. Pila | (i) Body segmented (ii) Mouth with Radula |
Mollusca |
| 2. Asterias | (i) Spiny skinned (ii) Water vascular system |
Echinodermata |
| 3. Sycon | (i) Pore bearing (ii) Canal system |
Porifera |
| 4. Periplaneta | (i) Jointed appendages (ii) Chitinous exoskeleton |
Arthropoda |
Which one of the following phyla is correctly matched with its two general characteristics?
| 1. | Arthropoda | − Body divided into head, thorax and abdomen and respiration by mouth |
| 2. | Chordata | − Notochord at early stage only and separate anal and urinary openings to the outside |
| 3. | Echinodermata | − Pentamerous radial symmetry and mostly internal fertilization |
| 4. | Mollusca | − Normally oviparous and development through a trochophore or veliger larva |
Which one of the following pairs is mismatched?
|
1. |
Pila globosa |
– |
pearl |
| 2. |
Apis indica |
– |
honey |
| 3. |
Kenia lacca |
– |
lac |
| 4. |
Bombyx mori |
– |
silk |
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, Sepia, Octopus |
| 4. | Porifera − Spongilla, Euplectella, pennatula |
Which of the following is wrongly matched?
| 1. | Haemoglobin in mammals – RBC |
| 2. | Haemozoin – Plasmodium cytoplasm |
| 3. | Haemocyanin – leeches |
| 4. | Haemoglobin dissolved in blood – Pheretima |
The largest and the second largest phylum of the animal kingdom are
1. Arthropoda and Echinodermata
2. Echinodermata and Mollusca
3. Mollusca and vertebrata
4. Arthropoda and Mollusca
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