Question

Pick the correct pair/ pairs out.
I. Alternate phyllotaxy - Hibiscus
II. Opposite phyllotaxy - Alstonia
III. Whorled phyllotaxy - Mustard
IV. Opposite phyllotaxy - Guava

• A. I, II
• B. III, IV
• C. II, 1V
• D. I, IV

Answer 1

The correct option is D I, IV

The pattern in which the leaves are arranged on the stem or its branches is called phyllotaxy. The leaves are arranged in such a way that all of them get proper sunlight.

There are 3 types of phyllotaxy- Alternate, opposite and whorled phyllotaxy.

Alternate phyllotaxy- In this type of phyllotaxy only one leaf is present at a single node and the leaves are arranged in an alternate fashion. E.g. Hibiscus, mustard, sunflower

Opposite phyllotaxy - A pair of leaves arise at each node on opposite side and the leaves generally lie opposite to each other at each node. E.g. Guava, Calotropis

Whorled phyllotaxy- More than two leaves arise at each node form a whorl or circle. The leaves of one whorl alternate the leaves of the next successive whorl. E.g. Alstonia, Nerium