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Which one has two pairs of jaws? (a) Ter...

Which one has two pairs of jaws?
(a) Terebella
(b) Tubifex
(c) Chaetopterus
(d) Aphrodite

A

Terebella

B

Tubifex

C

Chaetopterus

D

Aphrodite

Text Solution

AI Generated Solution

The correct Answer is:
To determine which organism has two pairs of jaws among the given options, we will analyze each option step by step. ### Step-by-Step Solution: 1. **Identify the Organisms**: The options provided are: - (a) Terebella - (b) Tubifex - (c) Chaetopterus - (d) Aphrodite 2. **Analyze Terebella**: - Terebella is known to have one pair of jaws (one upper jaw and one lower jaw). - Since it has only one pair of jaws, it cannot be the correct answer. 3. **Analyze Tubifex**: - Tubifex, also known as sludge worms, possess small bristle-shaped jaws. - These jaws are not true jaws but act like paddles for feeding. - Tubifex also has only one pair of jaws, thus it is not the correct answer. 4. **Analyze Chaetopterus**: - Chaetopterus is another organism in the phylum Annelida. - It is known to have one pair of jaws as well. - Therefore, this option is also incorrect. 5. **Analyze Aphrodite**: - Aphrodite, commonly referred to as the sea mouse, is known to have two pairs of jaws. - It possesses feeler-like appendages which can be considered as two pairs of jaws. - Since Aphrodite has two pairs of jaws, this option is correct. ### Conclusion: The organism that has two pairs of jaws is **(d) Aphrodite**. ---
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