Question

The wavy leaf margin is found in-
A. Banyan
B. Grasses
C. Polyalthia
D. Banana

Answer 1

Hint: A leaf is the main lateral appendage of the vascular plant stem, and usually borne above the ground and is specialized to carry out photosynthesis. The leaves and stem together form the shoot.

Complete answer:
Polyalthia is a very lofty evergreen tree which is found mainly in India. It belongs to the Annonaceae family. It is effectively planted due to its effectiveness in alleviating noise pollution. The leaves of this tree are lance-shaped and have margins which appear wavy. The leaves appeared alternate, simple and long.

Hence, the correct option is option C i.e. Polyalthia.

Additional information:
The other types of leaf margins are:-
> Entire Margin: A very smooth edge is known as an entire margin. There are no teeth or notches present taken from the edge, it remains smooth and complete. An example of this type is the beech.
> Lobed Margins: They possess lobed margins, where the blade of the leaf is divided into some protrusions. They can be either spiky or rounded. For example oak leaf.
> Toothed Margins: Another type of margin is toothed. This type of margins covers three more terms; serrate, dentate, and crenate. Serrate margins are such type of leaf margins in which the teeth appear to be those of like a saw, and are continuous as well as forward pointing (just like the sweet chestnut).

Note: The leaf margin is known as the boundary area which is extending along the edge of the leaf. There are a lot of different types of leaf margins that are very important for plant identification and grouping.