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

Specialised cells, tissues and organs — practice question

Fig. 1.1 presents a plant together with an enlarged transverse section (TS) of the root and an incomplete enlarged transverse section (TS) of the stem.
(a(i))[1]

Using a label line and the letter X, indicate on Fig. 1.1 where the xylem tissue lies in the transverse section (TS) of the root.

(a(ii))[2]

Finish the transverse section (TS) of the stem in Fig. 1.1 so that the arrangement of xylem and phloem tissue is shown.

(a(iii))[1]

Using a label line and the letter P, indicate the position of the phloem tissue that you have drawn.

(b)[3]

State the functions of phloem tissue.

Worked solution & mark scheme

This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: Use label line X to identify the xylem in the root transverse section.

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