Questions
Which of the following structures are modified placoid scales in Trygon?
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Correct option is B
Similar Questions
Match the following genera with their respective phyla.
| Column I | Column II | ||
| (a) | Adamsia | (i) | Mollusca |
| (b) | Aplysia | (ii) | Aschelminthes |
| (c) | Ascidia | (iii) | Chordata |
| (d) | Ancylostoma | (iv) | Cnidaria |
| a | b | c | d | |
| 1. | i | iv | iii | ii |
| 2. | iv | i | iii | ii |
| 3. | ii | iii | i | iv |
| 4. | iv | i | ii | iii |
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