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

Zoology, Protozoa general characters and classification

Protozoa general characters and classification

Explain functional properties of gellan gums, Explain functional properties...

Explain functional properties of gellan gums One of the most important features of gellan gums is its versatile texture which is defined in terms of hardness (measure of ruptur

Exchange list vs. food composition tables for menu planning, Define Exchang...

Define Exchange list vs. Food composition tables for menu planning? A dietician is frequently expected to make quick, yet reasonably accurate estimation of the nutritive value

Explain first meiotic division, Q. What are the periods of the first meioti...

Q. What are the periods of the first meiotic division? Meiosis I is divided into metaphase I, prophase I, anaphase I and telophase I.

What are phenotypical & genotypical proportions in f1 & f2, According to th...

According to the Mendel's second law, in the crossing between homozygous individuals concerning two pairs of nonlinked alleles, AABB x aaBB, what are the phenotypical and genotypic

How does one get infected by etec, Q. How does one get infected by Enteroto...

Q. How does one get infected by Enterotoxigenic escherichia coli gastroenteritis(ETEC)? Infection occurs when a person eats food or drinks water or ice contaminated with ETEC

Nature and distribution of viruses, Nature and Distribution of Viruses ...

Nature and Distribution of Viruses Although several infectious diseases of animals and plants had been found to be caused by viruses during early 20 th century, the true natur

Explain the structure of a human sperm, (a) Explain the structure of a hum...

(a) Explain the structure of a human sperm. (b) Give a schematic representation showing the events of Spermatogeninesis in human male.

Explain about insulin concentrations, Insulin Concentrations The doctor...

Insulin Concentrations The doctor always prescribes insulin dosage in units. Thus all types of insulin (crystalline, NPH, Lente, and so forth) is available in 10-ml vials that

Write the definition of communication, Q. Write the definition of communica...

Q. Write the definition of communication? Communication is "a process of transmitting ideas, information, attitudes (images which we have formulated for ourselves) by the use o

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