KCET · BIOLOGY · STD 11 - 5. Morphology of Flowering Plants

The diagram of the section of a maize grain is given below. Identify the parts labelled A, B, C and D.

A A-endosperm, B-coleoptile, C-scutellum, D-aleurone layer
B A-endosperm, B-coleorhiza, C-scutellum, D-aleurone layer
C A-endosperm, B-cotyledon, C-scutellum, D-aleurone layer
D A-cotyledon, B-coleoptile, C-scutellum, D-aleurone layer

Verified Solution

Answer & Solution

Correct Answer

(A) A-endosperm, B-coleoptile, C-scutellum, D-aleurone layer

Step-by-step Solution

Detailed explanation

(A) A-endosperm, B-coleoptile, C-scutellum, D-aleurone layer,
In the maize grain diagram, A represents endosperm, storing starch; B is the coleoptile, protecting the emerging shoot; C is the sutellum, a nutrient-absorbing modified cotyledon; and D is the epithelium.

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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