Question

Which one of the following is NOT related to the entry of a pollen tube in an ovule?

• A. Chalazogamy
• B. Siphonogamy
• C. Mesogamy
• D. Porogamy

Hint:

In plant reproduction, the method of pollen tube entry into the ovule varies and affects fertilization.

Answer 1

The Correct Option is A

Step 1: Understanding pollination types.
In pollination, various methods describe how the pollen tube enters the ovule: - Siphonogamy refers to the entry of pollen tube through a specific channel. - Mesogamy refers to the pollen tube entering the ovule through the middle portion. - Porogamy refers to the pollen tube entering the ovule through a hole or pore. Step 2: Analyzing the options.
(A) Chalazogamy: Correct. This refers to the entry of the pollen tube through the chalaza of the ovule, but it is not commonly used for most ovules.
(B) Siphonogamy: This is related to the pollen tube entry and is a valid term in fertilization.
(C) Mesogamy: This is related to the entry of the pollen tube.
(D) Porogamy: This is a common method of pollen tube entry and is related to fertilization. Step 3: Conclusion.
The correct answer is (A) Chalazogamy.