Biology 5090 · O Level · Specialised cells, tissues and organs

Specialised cells, tissues and organs — practice question

Fig. 5.1 shows a photomicrograph of the middle region of a plant root.
(a(i))[2]

Identify the tissues labelled J and K.

(a(ii))[1]

State the name given to the group of tissues labelled L.

(a(iii))[2]

State two structural differences between a cell in tissue K and a cell in tissue J.

(a(iv))[4]

Outline the function of tissue J.

(b(i))[2]

Name the type of response shown by a plant root when it grows down into soil after the seed has germinated.

(b(ii))[4]

Explain how this response shown by the plant root is needed for the leaves to grow and become green.

Worked solution & mark scheme

This 15-mark question has a full step-by-step worked solution and mark scheme. One marking point: J is phloem

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