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Question

Match the following structures in molluscs to their respective functions:

Column I Column II

1) Radula a) Blood pigment

2) Mantle layer b) Mastication

3) Foot c) Secretion of shell

4) Haemocyanin d) Locomotion


A

1) ⇒b, 2)⇒c, 3)⇒d, 4)⇒a.

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B

1) ⇒a, 2)⇒b, 3)⇒c, 4)⇒d.

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C

1) ⇒c, 2)⇒a, 3)⇒d, 4)⇒b.

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D

1) ⇒c, 2)⇒b, 3)⇒d, 4)⇒a.

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Solution

The correct option is A

1) ⇒b, 2)⇒c, 3)⇒d, 4)⇒a.


The functions of these organs in molluscs are as follows:

1) Radula helps in mastication or chewing of food.
2) Mantle layer helps in secretion of the shell.
3) Foot helps in locomotion.
4) Haemocyanin is a copper-containing proteinaceous pigment found in the blood of invertebrates such as molluscs, and transports oxygen throughout the body.


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