Nucellus - ovule, Biology

Assignment Help:

Nucellus - Ovule

Enclosed within the integuments lies a homogenous mass of tissue which is termed as the nucellus. This is the tissue in which the female gametophyte differentiates and develops. At an early stage of ovule development, usually an archesporial cell or a group of cells differentiate in the hypodermal region of the nucellus. The archesporial cell may function directly as the sporogenous cell. In such situations, the sporogenous cell also remains hypodermal in position and is surrounded by a single-layer of nucellus, in the micropylar region. Such ovules are known as tenuinucellate. These are commonly seen in Sympetalae.

405_Nucellus.png

Figure: Tenuinucellate ovule of Elytraria acaulis. In c and d integuments are not shown.


Related Discussions:- Nucellus - ovule

Region of the injury in the axial skeleton, what major nerve do you think i...

what major nerve do you think is being compressed when a person often feel pain in the posterior surface of the thigh radiating to the area behind the knee and where is the likely

Human impact on environment, questions and answers on human impacts on envi...

questions and answers on human impacts on environment

Permanent wilting percentage (pwp), Permanent Wilting Percentage (PWP) ...

Permanent Wilting Percentage (PWP) It is the percentage of moisture in the soil at which a plant wilts and does not recover unless water is added to the soil. PWP for clay is

Examples of genetic engineering that are improve crop plant, Give three exa...

Give three examples of genetic engineering that are intended to improve crop plants. Genetic engineering of crop plants can improve resistance to pests, retard ripening, impro

Explain the chemical properties of monosaccharides, Explain the Chemical Pr...

Explain the Chemical Properties of Monosaccharides? As you already know the chemical properties of monosaccharides depend on the presence of the hydroxyl the aldehyde or the ke

Explain glycerol esters of fatty acids, Explain Glycerol esters of fatty ac...

Explain Glycerol esters of fatty acids Glycerol esters of fatty acids, which make up to 99% of the lipids of plant and animal origin have been traditionally called  fats and oi

What is the function of the skin in humans, What is the function of the ski...

What is the function of the skin in humans? The skin is the external covering of the body. In humans its major functions are protection, perception of information from the envi

Theory or principle of determination of the quality of milk, Explain the Th...

Explain the Theory or Principle of Determination of the Quality of Milk Milk is an ideal medium for the survival and growth of microorganisms. It contain all the nutrients, i.e

Egg type, why their is different amount of yolk is present in eggs.

why their is different amount of yolk is present in eggs.

Explain procedure for the use of light microscope, Explain Procedure for th...

Explain Procedure for the use of Light Microscope? Now carry out the exercise following the steps enumerated herewith. 1. Place the microscopic slide with any specimen on th

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