Biology 9700 · AS & A Level · Transport mechanisms

Transport mechanisms — practice question

Table 6.1 gives some information about xylem vessels and phloem sieve tube elements in plants.
(a)[4]

Fill in Table 6.1.

(b)[1]

State one role of magnesium ions in plants.

Worked solution & mark scheme

This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “xylem carries water and mineral ions” …

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