Ma'am can you please explain why is aster and centriole not present in plant cells?
Asked by saachikab | 3rd Apr, 2020, 01:11: PM
Instead of centrioles, plants have phragmoplasts. They are not exactly a replacement for centrioles, but the whole process is a little different. Spindle formation in plants is very different from most other eukaryotes owing to the fact that plant cells lack centrosomes or spindle pole bodies, which act as the microtubule organizing centers in animal cells. Cell division or mitosis occurs differently in plants as compared to animals.
The centrioles are the centres for the formation of the microtubules required for the spindle fibres formation during cell division. The aster is the star-like formation around the centriole. This is the region from where the spindle fibres get distributed in all the sides. The centrioles and aster are present in the animal cells and absent in the plant cells.
Answered by Sheetal Kolte | 4th Apr, 2020, 01:11: PM
- Draw anaphase stage with 3 pairs of Chromosomes. Which is the resting phase? Is it interphase or late G1 phase?
- What are the functions of asters? What is the difference between centrioles and centrosomes? What is a homologous chromosome? Define it.
- what is mitosis
- Why spindle fibre form
- What is M phase?
- How does the furrow in the animal cell deepen?
- why does the thickning of chromatin material thicken during the interphase?
- What is the shortest test of mitosis
- What is 'M' phase
- You did not mention KINETOCHORE which connects the chromatids to the spindle fibres to pull them towards the poles.......Please confirm.
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Verify mobile number
Enter the OTP sent to your number