Question

The red seaweed lives under water at a depth of 2 meters. Suggest an advantage to the red seaweed of having other pigments in addition to chlorophyll a. (2)

a) Red seaweed has other pigments to protect it from predators.
b) Red seaweed has other pigments to absorb different wavelengths of light at greater depths.
c) Red seaweed has other pigments for camouflage in the water.
d) Red seaweed has other pigments to keep it warm in the cold ocean.

Answer 1

Red seaweed benefits from having other pigments in addition to chlorophyll a to capture more available light energy and conduct photosynthesis at greater depths in low-light conditions.

Step-by-step explanation:

In underwater environments, where light intensity decreases with depth, red seaweed benefits from having other pigments in addition to chlorophyll a to absorb different wavelengths of light at greater depths.

These additional pigments allow red seaweed to capture more available light energy and conduct photosynthesis even in low-light conditions.

Overall, having other pigments helps red seaweed adapt to its environment and thrive in the underwater ecosystem.