Q. No.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 |
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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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All mollusks do not have:
| I. Open circulatory system | II. A shell | III. Radula |
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | I, II and III |
Match the following organism with their respective characteristics:
| (a) | Pila | (i) | Flame cells |
| (b) | Bombyx | (ii) | Comb plates |
| (c) | Pleurobrachia | (iii) | Radula |
| (d) | Taenia | (iv) | Malpighian tubules |
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (ii) | (iv) | (i) |
| 2. | (iii) | (ii) | (i) | (iv) |
| 3. | (iii) | (iv) | (ii) | (i) |
| 4. | (ii) | (iv) | (iii) | (i) |
| COLUMN I | COLUMN II | ||
| A | Comb plates | P | Cnidaria |
| B | Metagenesis | Q | Mollusca |
| C | Canal system | R | Sponges |
| D | Radula | S | Ctenophora |
| A | B | C | D | |
| 1. | S | P | R | Q |
| 2. | P | S | R | Q |
| 3. | P | S | Q | R |
| 4. | S | P | Q | R |
In a typical mollusc:
I. Head, muscular foot, and visceral hump are body segments.
II. Mantle over the visceral hump is formed by a layer of skin.
III. Radula is a file-like rasping organ
1. Only III is correct
2. Only II and III are correct
3. Only I and III are correct
4. Only I and II are correct
Match each item in Column I with one item in Column II and select the correct match from the codes given:
| COLUMN I | COLUMN II | ||
| A | Largest marine animal phylum | P | Arthropoda |
| B | Largest animal phylum | Q | Mollusca |
| C | Largest vertebrate class | R | Pisces |
| D | Largest vertebrate endotherm class | S | Aves |
Codes
| A | B | C | D | |
| 1. | P | Q | R | S |
| 2. | Q | P | S | R |
| 3. | P | Q | S | R |
| 4. | Q | P | R | S |
Match the following list of animals with their level of organization.
| Division of Labour | Animal | ||
| A. | Organ level | i. | Pheritima |
| B. | Cellular aggregate level | ii. | Fasciola |
| C. | Tissue level | iii. | Spongilla |
| D. | Organ system level | iv. | Obelia |
Choose the correct match showing division of labour with animal example:
| i | ii | iii | iv | |
| 1. | B | C | D | A |
| 2. | B | D | C | A |
| 3. | D | A | B | C |
| 4. | A | D | C | B |
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Which one of the following phyla is correctly matched with its two general characteristics?
1. Echinodermata - pentamerous radial symmetry and mostly internal fertilization
2. Mollusca - normally oviparous and development through a trochophore or veliger larva
3. Arthropoda - body divided into head, thorax and abdomen and respiration by mouth
4. Chordata - notochord at some stage, separate anal and urinary openings to the outside
Ospharidia in mollusks are:
| 1. | Chemical sensors | 2. | Balancing receptors |
| 3. | Photoreceptors | 4. | Chromatophores |
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