Back to your test review

In Engelmann's experiment, aerobic bacteria were used to

  • (a) fix nitrogen for the alga Your answer
  • (b) absorb light of particular wavelengths Your answer
  • (c) supply CO2 to the alga Your answer
  • (d) detect the sites of O2 release Correct
Your answer: Correct answer: (d)
Advertisement

Explanation

Why (d) is correct

Aerobic bacteria move towards oxygen. They gathered where the alga released the most O2, so they acted as detectors of the sites of O2 release.

Why the other options are wrong

  • (a) · your answer Fixing nitrogen was not their role in the experiment.
  • (b) · your answer The bacteria did not absorb the light; the alga did.
  • (c) · your answer The bacteria were not supplying CO2.
NCERT point: Engelmann's experiment gave the first action spectrum of photosynthesis.
What is wrong?
Thank you! We will check this question.
Practise Photosynthesis in Higher Plants
Take a free 15-question NEET Biology test on this chapter. Timed, scored instantly.
Start free test

Similar questions

Engelmann's experiment with Cladophora gave the first By the middle of the nineteenth century, the overall equation of photosynthesis was written as Cornelius van Niel's studies on purple and green bacteria showed that photosynthesis is essentially a process in which