Question

Leaf margin and Leaf midrib

Answer 1

Leaf margin:

1. The outline of the leaf blade is called the leaf margin.

Leaf midrib:

1. The thick vein running centrally through the leaf blade is known as the midrib.

Leaf margin	Leaf midrib
1. Leaf margin forms the outline of the leaf blade.	1. Leaf midrib is the central thick vein running through the leaf blade.
2. Leaf margins are either smooth or rolled downwards and are important for the identification of plants.	2. It occurs in true leaves and provides support to the leaf.