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In a pollen grain, larger nucleus is...

In a pollen grain, larger nucleus is

A

Generative nucleus

B

Tube nucleus

C

Vegetative nucleus

D

None of these

Text Solution

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The correct Answer is:
To answer the question "In a pollen grain, the larger nucleus is:", we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Composition of Pollen Grains**: - Pollen grains are microspores found in flowering plants, specifically angiosperms. Each pollen grain typically contains two nuclei. 2. **Identify the Nuclei Present**: - The two nuclei present in a pollen grain are the generative nucleus and the tube nucleus. 3. **Function of Each Nucleus**: - The **tube nucleus** is responsible for guiding the growth of the pollen tube, which is essential for fertilization. - The **generative nucleus** divides to form two sperm cells that will eventually fertilize the egg cell. 4. **Determine the Size of Each Nucleus**: - In terms of size, the tube nucleus is generally larger than the generative nucleus. 5. **Conclusion**: - Therefore, the larger nucleus in a pollen grain is the **tube nucleus**. ### Final Answer: The larger nucleus in a pollen grain is the **tube nucleus**. ---

To answer the question "In a pollen grain, the larger nucleus is:", we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Composition of Pollen Grains**: - Pollen grains are microspores found in flowering plants, specifically angiosperms. Each pollen grain typically contains two nuclei. 2. **Identify the Nuclei Present**: ...
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