Multiple choice

When green algae are illuminated, motile aerobic bacteria accumulate near them. Which of the following is the correct reason?

  1. Light emitted by algae

  2. Water released by algae

  3. Oxygen released by algae

  4. Carbon dioxide released by algae

  5. Chlorophyll released by algae

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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