Neco 2022 Biology Question 5

Practice essay / theory question 5 from the 2022 Neco Biology examination. This question covers transport in plants .

Neco 2022 Biology Essay / Theory

Topic: transport in plants

Question 5 NECO • 2022 • BIOLOGY • essay

The diagram shows a cross‑section of a dicot leaf with several structures labelled.

Question Parts

( a )

Identify each labelled part (A, B, C, D, E) in the diagram and state its primary function related to transport in plants.

( b )

Using the labelled structures, describe the continuous pathway that water follows from the root to the site of evaporation in the leaf.

( c )

In a controlled experiment a leaf of area 25 cm² loses water at a rate of 0.45 mg cm⁻² h⁻¹ under the given conditions. Calculate the total mass of water lost from the leaf in 3 hours. Show all steps.

( d )

Discuss two environmental factors that could affect the rate of transpiration and explain how each factor influences the process.

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About This Question

This is Neco 2022 Biology Question 5. It is one of the essay questions from the 2022 Neco Biology examination.

The question covers transport in plants .

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