MCQ practice · SSC Biology Board questions · Chapter 4: Bioenergetics
After a few hours Rimon observed-
- i. the height of mercury in the thermometer of flask P rose
- ii. the height of mercury in the thermometer of flask Q did not change
- iii. the sprouting of the seeds in flask Q increased
Think it through first, then pick an option.
- a i and ii
- b i and iii
- c ii and iii
- d i, ii and iii
Answer and explanation
Correct answer: a i and ii
Mercury rose in P (i) and stayed put in Q (ii); the Q seeds are dead so they did not sprout more (iii is false).
Why the other options are wrong
- b i and iii: iii is false: dead seeds do not sprout; and the true ii is left out.
- c ii and iii: iii is false, and the true i is left out.
- d i, ii and iii: iii is false, so all three cannot be correct.
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