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

Pulse oximetry readings, Outline three client considerations when taking an...

Outline three client considerations when taking an accurate pulse oximetry reading.

Describe briefly about the type 1 diabetes, Describe Briefly about the Type...

Describe Briefly about the Type 1 Diabetes? In people with normal weight, Type1 Diabetes is not a major cause of death but it is an important contributor to morbidity and morta

Comparison to healthy lungs, The nature of the sounds produced by percussio...

The nature of the sounds produced by percussion (tapping) a patient's chest can tell a physician a great deal about the condition of the organs within the thoracic cavity. Healthy,

Procedure for estimation of vitamin c - colorimetric method, Define Procedu...

Define Procedure for estimation of vitamin c - colorimetric method? Carry out the experiment following the instructions given herewith: 1. Prepare a series of tubes for blan

Define the normal squid intracellular saline, At 1 AM, a researcher places ...

At 1 AM, a researcher places a healthy squid giant axon in a bath of normal squid physiological extracellular saline and internally perfuses the axon with normal squid intracellula

What do you mean by echinodermata, Q. What do you mean by Echinodermata? ...

Q. What do you mean by Echinodermata? You will recall that Pliylum Echinodermata includes spiny skinned animals which are exclusively marine (Gr, echinus : spiny; derma: ski

Two dimensional gene scanning method, Two dimension gene scanning technique...

Two dimension gene scanning technique is a high resolution system for finding of mutational variants in multiple genes. This method is on the basis of combination of extensive poly

PROTOZOA., WHAT ARE THE ADVANTAGES & THE DISADVANTAGES OF PROTOZOA?

WHAT ARE THE ADVANTAGES & THE DISADVANTAGES OF PROTOZOA?

Vertebrate eye - adult eye, Vertebrate Eye - Adult Eye There are no m...

Vertebrate Eye - Adult Eye There are no main differences in the structure or composition of the eyes among different vertebrates. This should be clear to you from the diagram

What are zymogens, Zymogens, or proenzymes, are enzymes secreted in inactiv...

Zymogens, or proenzymes, are enzymes secreted in inactive form. Under certain conditions, a zymogen shifts to the active form of the enzyme. Zymogen secretions in general occur due

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