NEET · Biology · STD 11 - 6. Anatomy flowering plants

Identify the correct statements:
\(A\). Lenticels are the lens-shaped openings permitting the exchange of gases.
\(B\). Bark formed early in the season is called hard bark.
\(C\). Bark is a technical term that refers to all tissues exterior to vascular cambium.
\(D\). Bark refers to periderm and secondary phloem.
\(E\). Phellogen is single-layered in thickness.
Choose the correct answer from the options given below:

A \(B\) and \(C\) only
B \(B,C\) and \(E\) only
C \(A\) and \(D\) only
D \(A,B\) and \(D\) only

Verified Solution

Answer & Solution

Correct Answer

(C) \(A\) and \(D\) only

Step-by-step Solution

Detailed explanation

Lenticels are lens shaped opening permitting exchange of gases between the outer atmosphere and internal tissue of the stem.
Bark that is formed early in the season is called early or soft bark. Towards the end of the season late or hard bark is formed.
Bark is non-technical term that refer to all tissues exterior to vascular cambium.
Bark refers to a number of tissue types, viz periderm and secondary phloem.
Phellogen is couple of layers thick
Therefore, only statement \(A\) and \(D\) are correct.

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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