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.
• B. 1 - a, 2 - b, 3 - c, 4 - d.
• C. 1 - c, 2 - a, 3 - d, 4 - b.
• D. 1 - c, 2 - b, 3 - d, 4 - a.

Answer 1

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.