Question

Assertion : Red colour of Rhodophyta is due to abundant formation of $r$-phycoerythrin.
Reason : $r$-Phycoerythrin is able to absorb blue green wavelength of light and reflect red colour.

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

Answer 1

Answer: (A)

The red colour of red algae (Rhodophyta) is due to abundant formation of $r$-phycoerythrin. Phycoerythrin absorb blue green wavelengths of light and reflect red light and thus imparts red colour to algae.