Multiple choice

Which of the following are used in long distance space travels?

  1. Chlorella
  2. Spirulina
  3. Synechococcus
  4. Chlamydomonas

  1. Only 1 and 2

  2. Only 1 and 3

  3. Only 1 and 4

  4. Only 2 and 3

  5. Only 3 and 4
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Yes, this is the correct answer. Algae like Chlorella and Synechococcus are used in long distance space travels. These have rapid rate of photosynthesis and are thus able to utilise all the CO2 released by astronauts and provide oxygen and food required by the travellers.

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