RRB Group D (Level-1 posts) 2022 · Question 30 of 598

Study the diagram of the cross-section of a leaf given below. Which option shows the correct labelling?

Aa - upper epidermis, b - waxy cuticle, c - stoma, d - air spaces, e - chloroplast
Ba - upper epidermis, b - lower epidermis, c - guard cell, d - air spaces, e - chloroplastCorrect
Ca - upper epidermis, b - lower epidermis, c - stoma, d - air spaces, e - nucleus
Da - waxy cuticle, b - upper epidermis, c - stoma, d - air spaces, e - nucleus

Answer: B. a - upper epidermis, b - lower epidermis, c - guard cell, d - air spaces, e - chloroplast

Explanation

In the cross-section of a leaf, the waxy cuticle prevents water loss, the upper epidermis provides structure, and the stoma allows for gas exchange. Option 2 correctly labels these parts.

Source: RRB Group D 2022 Prev. Yr. Paper (17 Aug 2022) (Shift 1) - FreshersNow · reliable-secondary

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