Question

Lamina of a flower is
A. The main vein present on the mid rib of the leaf
B. Broad expanded the green part of the leaf.
C. Small leaves at the base of petioles
D. Chloroplast which contains the chlorophyll

Answer 1

Hint: The leaf is lateral, commonly flattened which arises from the stem. A typical lea contains three main parts namely leaf base, petiole, and lamina. The leaf is most important for photosynthesis.Lamina generally greens in color and it is also known as leaf blade. Lamina contains chloroplast which helps in photosynthesis.

Complete answer:
The prominent middle vein, which is known as the midrib.
So, option (A) is incorrect.
The broad expanded part of the leaf is called Lamina. Lamina generally greens in color and it is also known as leaf blade. Lamina contains chloroplast which helps in photosynthesis. Shape, margin, apex, and the surface and extent of incision of lamina vary in different leaves. When the lamina is entire or incised, the incision does not touch the midrib is said to be a simple leaf. When the incision of the lamina touches the midrib breaking it into a number of leaflets this type of leaf is known as a compound leaf.
So, option (B) is the correct answer.
Stipules are the small leaves that are present at the base of the petioles.
So, option (C) is incorrect.
Chloroplast contains chlorophyll which helps in photosynthesis.
So, option (D) is incorrect.

Hence, the correct answer is option (B).

Note: Veins and the veinlets arrangement in the lamina are termed as venation. Within the lamina of the leaf, the veins run parallel to each other this type of venation is termed parallel venation. The veins do not run parallel and veinlets form a network this type of venation is termed reticulate venation. In monocot plants, we can see parallel venation and in the dicot plant, we can see the reticulate venation. Veins are helped to give rigidity to the leaf blade and they transport water, minerals, and food materials.