MHT CET · BIOLOGY · STD 12 - 1. Reproduction in Lower and Higher Plants

Environmental biotic factor that helps in pollination is

A air
B water
C wind
D insects

Verified Solution

Answer & Solution

Correct Answer

(D) insects

Step-by-step Solution

Detailed explanation

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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Match hormones given in Column I with their source gland in Column II.
Column I Column II
i Oxytocin a. Adrenal medulla
ii Melatonin b. Thyroid gland
iii Catecholamines c. Pineal gland
Iv Calcitonin d. Hypothalamus
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	Column I		Column II
i	Oxytocin	a.	Adrenal medulla
ii	Melatonin	b.	Thyroid gland
iii	Catecholamines	c.	Pineal gland
Iv	Calcitonin	d.	Hypothalamus