Question

In angiosperms, which process involves the fusion of male gamete with the egg cell?

• A. Double fertilization
• B. Syngamy
• C. Fragmentation
• D. Pollination

Hint:

Be precise with terminology. While syngamy is a component of double fertilization in angiosperms, the term 'syngamy' specifically refers to the fusion of the male gamete and the egg. 'Double fertilization' refers to the entire process involving both fusions (syngamy and triple fusion).

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
The question asks for the specific term for the fusion of a male gamete with the female gamete (egg cell) in flowering plants (angiosperms).
Step 2: Detailed Explanation:
Let's analyze the given options in the context of angiosperm reproduction:


Pollination: This is the process of transferring pollen grains from the anther to the stigma of a flower. It is a prerequisite for fertilization but is not the fusion of gametes itself.

Syngamy: This is the general biological term for the fusion of two gametes to form a diploid zygote. In the context of angiosperms, it specifically refers to the fusion of one of the two male gametes with the egg cell.

Double fertilization: This is a complex process unique to angiosperms. It involves two fertilization events:

The fusion of one male gamete with the egg cell (this is syngamy) to form the zygote.
The fusion of the second male gamete with the two polar nuclei in the central cell to form the triploid primary endosperm nucleus (PEN).
While syngamy is a part of double fertilization, the question asks for the specific process of male gamete and egg cell fusion, which is most accurately described as syngamy.

Fragmentation: This is a form of asexual reproduction where an organism breaks into fragments, each of which can develop into a new individual. It is not related to sexual reproduction involving gametes.

Step 3: Final Answer:
The fusion of the male gamete with the egg cell is precisely termed syngamy. Double fertilization is the larger event that includes syngamy. Therefore, syngamy is the most specific and correct answer.