MCQ practice · SSC Biology Board questions · Chapter 10: Co-ordination
Ethylene, the phytohormone-
- i. is a gaseous substance
- ii. delays ageing
- iii. helps fruit to ripen
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: b i and iii
Ethylene is a gas (i) and helps fruit ripen (iii); delaying ageing is not its job.
Why the other options are wrong
- a i and ii: i and ii is not right: ii is the job of cytokinin, and the true statement iii is left out.
- c ii and iii: ii and iii is not right: cytokinin, not ethylene, delays ageing, and being a gas (i) is left out.
- d i, ii and iii: All three is not right: ii is false because delaying ageing belongs to cytokinin.
Your account is open, so all 30,000+ MCQs from every chapter are yours. Start practising SSC Biology →
Want to keep going?
A free account carries you on to the next questions and opens 30,000+ MCQs from every chapter. Join before launch and Chirkut bundles are 60% off.
The ones you missed, worth one more look