Assertion: Each group of algae has a characteristic colour.
Reason: Each group of algae show predominance of one pigment.

Options

A. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B. If both assertion and reason are true but the reason is not a correct explanation of the assertion
C. If the assertion is true but the reason is false
D. If both the assertion and reason are false

Answer

a

Explanation

The colour of the algae thallus which varies in different classes of algae is due to the presence of definite chemical compounds in their cells. These These are called the pigments. Each pigment has its own characteristic colour. The particular colour that an alga has is due to colour. The particle colour that on alga has is due to the predominance of one pigment in a combination of several others. Each group of algae has its own particular combination of pigments and a characteristic colour which is not found in other algal groups.