Study the given figures and identify the kind of phyllotaxy.
Updated On: Jul 7, 2022
a
b
c
d
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The Correct Option isB
Solution and Explanation
In alternate (or spiral) phyllotaxy, only one leaf is borne on a node and the leaves of the adjacent nodes roughly lie towards the opposite sides (e.g., Hibiscus). In opposite phyllotaxy, two leaves are borne on the opposite sides of a single node, e.g., guava in whorled or verticillate phyllotaxy, three (e.g., Nerium) or more than three (e.g., Alstonia) leaves develop from a single node.
A primary function of the leaf is to provide nourishment for a plant. Leaves get this by extracting water from the earth and carbon dioxide from the air with the help of sunshine.
Parts of a leaf
Following are the parts of a leaf:
The top part of the leaf is the apex or tip that can be round, pointed, and smooth.
On most leaves, the lamina, or leaf blade, is the broadest part of the leaf.
A petiole is a leaf that links to the plant stem.
Stipules, which are little green addendums near the base of the petiole, can also be seen on leaves.
Most leaves have a midrib that branches out to initiate vascular tissue veins on the sides.
Margin refers to the leaf's outer border, which varies depending on the plant type.
At the bottom of the blade, the base is found; it can be flat, heart-shaped, and round.
