1.

Algae float in the water during day time and sink during night time because

A.                 They become buoyant due to consumption of food materials in respiration
B.                 They lose weight at night
C.                 They come up to enjoy sunshine
D.                 They become buoyant in light due to accumulation of oxygen bubbles released in photosynthesis
Answer» E.


Discussion

No Comment Found

Related MCQs