Understanding Vegetative Cell and Generative Cell Differences
Vegetative and generative cells are two distinct types of cells found in pollen grains, playing crucial roles in plant reproduction. While both are involved in fertilization, they have different functions and characteristics that distinguish them.
The vegetative cell is responsible for forming the pollen tube, which facilitates the movement of the generative cell toward the ovule. In contrast, the generative cell undergoes division to produce two sperm cells, which participate in fertilization.
Differences Between Vegetative Cell and Generative Cell
Essential Study Materials for NEET UG Success
FAQs on Difference Between Vegetative Cell and Generative Cell
1. What is the main difference between a vegetative cell and a generative cell?
A vegetative cell forms the pollen tube, while a generative cell divides to form sperm cells for fertilization.
2. What is a vegetative cell?
A vegetative cell is a non-reproductive cell in the pollen grain responsible for forming the pollen tube.
3. What is a generative cell?
A generative cell is a reproductive cell in the pollen grain that undergoes mitosis to form two sperm cells.
4. What is vegetative fertilization and generative fertilization?
Vegetative fertilization refers to the formation of the pollen tube, while generative fertilization involves the fusion of sperm cells with the egg and central cell.
5. What is the difference between vegetative propagation and spore formation?
Vegetative propagation is a method of asexual reproduction in plants, whereas spore formation is a reproductive strategy involving the production of spores.
6. How do you identify vegetative cells?
Vegetative cells are larger, have an irregular-shaped nucleus, and contain dense cytoplasm.
7. Why is it called vegetative?
It is called vegetative because it is involved in the growth and transport of reproductive cells rather than direct fertilization.
8. What is vegetative vs. generative growth?
Vegetative growth refers to the development of non-reproductive plant parts, while generative growth involves reproductive structures like flowers and seeds.
9. What is the difference between vegetative cells and spores?
Vegetative cells are active and part of pollen grain formation, while spores are reproductive units that develop into new organisms.
10. Is E. coli a vegetative cell?
Yes, E. coli exists as a vegetative cell under normal conditions but can form endospores in adverse environments.
11. What is the shape of the generative cell?
The generative cell is typically small and round with a compact nucleus.
12. How is the vegetative state different from the spore state?
The vegetative state is an active phase where cells grow and divide, while the spore state is a dormant phase resistant to harsh conditions.
13. What is the endospore in a vegetative cell?
An endospore is a resistant, dormant structure formed within a vegetative cell under extreme conditions.
14. Why are endospores more resistant than vegetative cells?
Endospores have a tough outer coat, low water content, and protective proteins that make them resistant to heat, radiation, and chemicals.
15. What is the difference between endospores and exospores?
Endospores form inside a vegetative cell, while exospores form externally.
