Multiple choice

Which among the following statements regarding blue-green algae is false?

  1. The DNA in blue-green algae is contained within a single, circular, looping chromosome.

  2. Blue-green algae have the ability to produce toxins.

  3. Most blue-green algae may appear red, yellow, green, brown or black.

  4. Blue-green algae do not exhibit sexual reproduction.

  5. Homocystous cells can perform nitrogen fixation.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Heterocystous cells can perform nitrogen fixation by absorbing free nitrogen in the air and transform free nitrogen to organic substances that may be used to fertilize the soil. The number and position of heterocysts are important features used to classify blue-green algae.

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