Neco 2020 Biology Question 33

Practice objective / multiple choice question 33 from the 2020 Neco Biology examination.

Neco 2020 Biology Objective / Multiple Choice Hard Difficulty

Question 33 NECO • 2020 • BIOLOGY • objective

A dicot leaf has a total surface area of 2.5 cm\(^{2}\). The lower epidermis shows a stomatal density of 250 stomata per mm\(^{2}\). Each stomatal pore is approximately circular with a diameter of 10 µm. Calculate the total maximum stomatal pore area on the leaf, giving your answer as an exact expression in terms of \(\pi\) and also to two decimal places (mm\(^{2}\)).

Correct Answer A. 25\pi/16 mm^2 (≈ 4.91 mm^2)

B. 25\pi\/32 mm^2 (≈ 2.45 mm^2)

C. 125\pi\/16 mm^2 (≈ 24.54 mm^2)

D. 25\pi\/8 mm^2 (≈ 9.82 mm^2)

Correct Answer

Correct Option:

25\pi/16 mm^2 (≈ 4.91 mm^2)

This is Neco 2020 Biology Question 33. It is one of the objective questions from the 2020 Neco Biology examination.

Difficulty level: Hard .

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