Question

Arrangement of leaves on a stem branch is –
(a) venation (b) vernation
(c) infloresecence (d) phyllotaxy

Answer 1

Arrangement of leaves on a stem branch is :

(d) phyllotaxy

• It is the study of the arrangement of leaves on the stem.

• There are three types of leaves arrangement on the stem branch namely:

1. whorled - In this at least 3 leaves grow from the same node of a stem.
2. opposite - In this, there is one by one arrangement of leaves.
3. alternate - In this growth of leaves is one per node.

Answer 2

Arrangement of leaves on a stem branch is phyllotaxy.

Option (D) is correct.

Explanation:

The study of arrangement of leaves on the stem is known as phyllotaxy.

There are three types of leaves arrangement on the stem.

• Whorled
• Opposite
• Alternate

In opposite phyllotaxy, the leaves are arranged one by one.

In whorled phyllotaxy, at least three leaves grow from same node of stem.

In alternate phyllotaxy, leaves grow one per node.

Thus, The arrangement of leaves on a stem branch is known as phyllotaxy.

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