Question

The thick vein in the middle of each leaf is called the _________.

• A. Pistil
• B. Midrib
• C. Lamina
• D. Ovule

Answer 1

The correct option is B

Midrib

The correct option is (B):

1. The flat, green and broad parts of the shoot that are located on the node of the stem are the leaves.
2. A typical leaf has the following parts: leaf base(petiole), leaf blade(lamina), and midrib.
3. The thick main vein which enters the leaf axis is known as the midrib.
4. Midrib bears branches which are known as veins.

Explanation of the incorrect option:

Option (A):

1. The pistil is the female reproductive part of a flower that consists of three parts- an ovary at the base, a narrow thread-like style, and a terminal stigma.
2. A complete flower is a structure that is made up of four different parts namely sepals, petals, stamens and carpel or pistil which are arranged in four whorls.

Option (C):

1. The green, flat and broad part of the leaf is called the lamina or leaf blade.

Option (D):

1. Ovules are small bead-like structures present inside the ovary which is a part of the carpel or pistil.
2. A flower is made up of four different parts namely sepals, petals, stamens and carpel which are arranged in four whorls.

Final answer: The thick vein in the middle of each leaf is called the midrib.