NEET · Biology · STD 12 - 11. organisms and populations

In a growing population of a country,

A Pre-productive individuals are more than the reproductive individuals
B Pre-reproductive individuals are less than reproductive individuals
C reproductive individuals and pre- reproductive individuals are equal in number
D reproductive individuals are less than the post- reproductive individuals.

Verified Solution

Answer & Solution

Correct Answer

(A) Pre-productive individuals are more than the reproductive individuals

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.

Same subject

Match List \(I\) with List \(II\).

List \(I\)	List \(II\)
(A). Mast cells	(I). Ciliated epithelium
(B). Inner surface of bronchiole	(II). Areolar connective tissue
(C). Blood	(III). Cuboidal epithelium
(D). Tubular parts of nephron	(IV). Specialised connective tissue

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Match List \(- I\) with List \(- II.\)

List \(- I\) (Products formed)	List \(- II\) (Reaction of carbonyl compound with)
\((a)\) Cyanohydrin	\((i)\) \(NH _{2} OH\)
\((b)\) Acetal	\((ii)\) \(RNH _{2}\)
\((c)\) Schiff's base	\((iii)\) alcohol
\((d)\) Oxime	\((iv)\) \(HCN\)

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