Question

Name and define three patterns in which leaves are arranged on stems. [3 MARKS]

Answer 1

1 Mark each

Leaves are arranged in different patterns at the node on the stem. The arrangement can be alternate, opposite and whorled.

1. In an alternate leaf arrangement, there is one leaf per node and they alternate sides.
2. In an opposite arrangement, two leaves arise from the same node on opposite sides of the stem.
3. In a whorled arrangement, there are at least three leaves at each node of the stem.