Question 21N.1A.SL.TZ1.8
| Date | November 2021 | Marks available | [Maximum mark: 1] | Reference code | 21N.1A.SL.TZ1.8 |
| Level | SL | Paper | 1A | Time zone | TZ1 |
| Command term | Question number | 8 | Adapted from | N/A |
In 1882, Engelmann investigated photosynthesis by shining light of varying wavelength on a green alga. He observed where aerobic bacteria accumulated.
[Source: Republished with permission of Oxford University Press, from Plant Physiology and Development, Sixth Edition by
Lincoln Taiz, Eduardo Zeiger, Ian M. Møller, and Angus Murphy, 2015. Permission conveyed through Copyright
Clearance Center, Inc.]
What can be deduced from this experiment?
A. Only parts of the chloroplast contained chlorophyll.
B. The distribution of bacteria indicates the action spectrum of photosynthesis.
C. Most oxygen is released from the algae in green light.
D. Chloroplasts reflect blue and red light.
[1]
B
A G2 comment suggested that this question would take too long to answer, but the statistics showed that students did not find it difficult.
