Megasporogenesis, Biology

Assignment Help:

Megasporogenesis

One of the nucellar cells situated subjacent to the epidermis differentiates into the primary archesporial cell. This cell is larger than the adjacent cells has dense cytoplasm and prominent nucleus. In tenuinucellate ovules, the archesporial cell functions directly as the megaspore mother cell (abbreviated as MgMC). In crassinucellate ovules, the archesporial cell first divides transversely to cut off a primary parietal cell on the outer side, and a primary sporogenous cell on the inner side. The primary parietal cell may either remain undivided or it may undergo a few divisions to form a few cells above the sporogenous cell.

2061_Megasporogenesis.png

Figure:  A part of a young ovule with large megaspore mother cell


Related Discussions:- Megasporogenesis

Porifera, what are the general characteristicss of porifera

what are the general characteristicss of porifera

Explain electron microscope, Explain Electron Microscope? Electron micr...

Explain Electron Microscope? Electron microscopes have higher magnification and resolving power than light microscopes.  What do we mean by magnification and resolving power? W

Explain anaerobic nitrogen-fixer, One of the free-living, anaerobic nitroge...

One of the free-living, anaerobic nitrogen-fixer is: 1. Beijernickia 2. Rhodospirillum 3. Rhizobium 4. Azotobacter Rhodospirillum

Elephentiasis, Elephentiasis It is a disease seen all over the world...

Elephentiasis It is a disease seen all over the world. The adult worm lives in the lymph glands and the lymph vessels of man. As the number of worms increases, they bl

Sex, How can I fuck my girlfriend without taking out cum?

How can I fuck my girlfriend without taking out cum?

Can you explain process of ovulation, Q. What are the hormones that promote...

Q. What are the hormones that promote the release of the female gamete from the follicle and at which day of the menstrual cycle does this phenomenon happen? What is this event cal

Explain the mechanism of drying, Explain the Mechanism of Drying? Dryin...

Explain the Mechanism of Drying? Drying as a mechanism, you will realize, involves the removal of free moisture from the surface and also moisture from the interior of the mate

What is phylum nematoda - roundworms, What is Phylum Nematoda - Roundworms?...

What is Phylum Nematoda - Roundworms? Nematodes are commonly known as the roundworms. They have a pseudocoelom type of body cavity, and they have a digestive tract that opens t

Determine the subordinate distinctions horizons, Subordinate Distinctions ...

Subordinate Distinctions In addition to the above mentioned designations, master horizons are further characterised by specific properties such as distinctive colour or the ac

Logical order in which molecules-atoms are associated, Q What is the logica...

Q What is the logical order in which the concepts of molecules, atoms, cells... up to biosphere are associated? Atoms form molecules that form cells that form tissues that form

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd