How many nuclei are found in a pollen tube during fertilization?
How many nuclei are found in a pollen tube during fertilization?
- A) 2
- B) 3
- C) 5
- D) 6
Correct Answer: B) 3
Explanation
During fertilization, a pollen tube grows from a pollen grain and enters the female ovule. The pollen tube contains two sperm nuclei. One sperm nucleus fertilizes the egg cell to form the zygote, while the other sperm nucleus fuses with the two polar nuclei to form the endosperm. Therefore, there are three nuclei present during fertilization: the two sperm nuclei and the polar nuclei. Therefore, the correct answer to the question is option B: 3. It is important to note that fertilization is a crucial process in sexual reproduction, and it leads to the formation of a zygote that later develops into a new organism. To learn more about this, please read the relevant sections of the recommended textbooks.