NEET · Biology · STD 11 - 11. photosynthesis in higher plants

The reaction centre in \(PS\) \(II\) has an absorption maxima at \(............\,nm\)

A \(780\)
B \(680\)
C \(700\)
D \(660\)

Verified Solution

Answer & Solution

Correct Answer

(B) \(680\)

Step-by-step Solution

Detailed explanation

In PS\(-I\), the reaction centre chlorophyll a has an absorption peak at \(700\,nm\), while in PS\(-II\), reaction centre has an absorption maxima at \(680\,nm\).

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 \(- II\)
\((a)\) Allen's Rule	\((i)\) Kangaroo rat
\((b)\) Physiological adaptation	\((ii)\) Desert lizard
\((c)\) Behavioural adaptation	\((iii)\) Marine fish at depth
\((d)\) Biochemical adaptation	\((iv)\) Polar seal

Choose the correct answer from the options given below. \((a) -(b)- (c)- (d)\)

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