Question

In a plant, the anther contains:

• A. Sepals
• B. Ovules
• C. Pistill
• D. Pollen grain

Answer 1

The correct option is D

Pollen grain

The correct option is D.

Explanations of the correct option:

Option D:

1. Pollen grains are mature gametophytes.
2. They are also known as microspores.
3. Pollen grains are produced in a bilobed tetrasporangiate (quadruple pollen sacs) structure attached to the filament and a part of the stamen (the male reproductive part of the flower).
4. The sepal (outermost whorl of the flower) is responsible for covering the developing bud.
5. The sepal is a single unit of the collective calyx.
6. The anther is the part of the stamen that has a long filament to rise high from the flower center.
7. Commonly five to six anthers surround a flower.
8. Filament is the slender stalk that develops the pollen.
9. Anthers are grainy bean-like pods that are attached at the end of the filament.
10. Anthers can be light yellow to deep red.

Explanations of the incorrect options:

Option A:

1. Sepals are the green outermost part of the flower.
2. They are modified leaves.
3. They surround the petals and protect the developing bud.
4. Collection of sepals is known as calyx.

Option B:

1. Ovules are the female gametophyte.
2. They are known as megaspores (larger gamete).
3. They are produced inside the ovary in the pistil.
4. They form seeds in the mature fruit.
5. They are produced from the spore mother cell via meiosis (reductional division).

Option C:

1. Pistill is responsible for producing ovules (female gametophyte).
2. It is known as the female reproductive organ.
3. It comprises the stigma that collects the pollen and a slender style that passes it to the ovary.
4. Pistill is the collection of carpels.

Final answer: In a plant, the anther contains pollen grain.