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

Minerals and reproduction, Minerals and reproduction The mechanism of mine...

Minerals and reproduction The mechanism of mineral-reproduction interactions is not fully understood because  of the complexity of neuro-hormonal dialogue. Some minerals act direc

Define determinants of food security - food access, Define Determinants of ...

Define Determinants of Food Security - Food Access? Food access is linked to its affordability. Food access is ensured when households and all individuals within them have adeq

Why is boiling used as a control, Substance A is being investigated to see ...

Substance A is being investigated to see if it is an enzyme. When substance A is mixed with substance B a reaction takes place. A control experiment is conducted using a sample of

Explain the term - seashore rhythm test, Explain the term - Seashore Rhythm...

Explain the term - Seashore Rhythm Test This test consists of 30 pairs of rhythmic patterns. The task is to judge whether the two members of each pair are the same or different

Explain about vitamin k, Vitamin K (Menadione - Vitamin K3, oil soluble) ...

Vitamin K (Menadione - Vitamin K3, oil soluble) Menadione is a yellow, lustrous, crystalline powder. It is easily soluble in benzene, soluble in fats and fatty oils.  It is spa

A haploid cell attempted to perform meiosis, What problem would most likely...

What problem would most likely to occur if a haploid cell attempted to perform meiosis? The cell could not replicate its DNA prior to meiosis.The cell could not pair homologous

Define key concepts and facts on properties of monosaccharid, Define Key Co...

Define Key Concepts and Facts on Properties of Monosaccharides? 1. All monosaccharides are soluble in water. 2. All monosaccharides give Molisch's test. 3. Monosaccharides do n

What are two characteristics of joints unique, What are two characteristics...

What are two characteristics that make synovial joints unique and different from other joints?

Advantages of fertilizers and manures, Advantages of Fertilizers and manure...

Advantages of Fertilizers and manures Fertilizers and manures are necessary for maintaining the soil in a high state of fertility and productivity.  It is important to know the

Digestive system, describe secretory function of salivary gland

describe secretory function of salivary gland

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