Question

Triple fusion involves

• A. Fusion of two polar nuclei
• B. Fusion of one male gamete with a female gamete
• C. Fusion of tube nucleus with generative nucleus
• D. Fusion of the second gamete with two polar nuclei.

Answer 1

The correct option is D

Fusion of the second gamete with two polar nuclei.

The correct option is D.

Explanation of the correct option:

1. The angiosperms are flowering plants that exhibit the phenomena of triple fusion.
2. It acts as a procedure through which two male gametes play their role.
3. A male gamete combines with an egg cell, resulting in the development of a zygote.
4. The embryo develops from the zygote.
5. The other male gamete joins with two polar nuclei.
6. The endosperm is formed as a result of this fusion.
7. Because there are three nuclei, this is known as triple fusion.

Explanation of the incorrect options:

Option A:

1. The secondary nucleus is the diploid nucleus created by the fusion of two polar nuclei.
2. The primordial endosperm nucleus is another name for it.

Option B:

Fertilization is the process by which the male and female gametes fuse, which happens in plants and animals.

Option C:

1. The pollen tube contains two types of nuclei: generative nuclei and pollen tube nuclei.
2. When the pollen grain nucleus divides during mitosis, the generative nucleus and pollen tube nucleus are formed.
3. The nuclei are both haploid.

Final Answer: Triple fusion involves the fusion of the second gamete with two polar nuclei.