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

Fungi, what is the symmetry of fungi?

what is the symmetry of fungi?

Explain the composition of macconkey agar, Explain the Composition of MacCo...

Explain the Composition of MacConkey Agar? Bactopeptone - 17.0 gm Protease Peptone - 3.0 gm Lactose - 10.0 gm Bile salt mixture - 1.5 gm Sodium chloride - 5.0 gm

Define impediments and recommendations to infuse biology, Define Impediment...

Define Impediments and Recommendations to Infuse Biology? As has been illustrated in this report, there are compelling instances demonstrating the value of and needs for concer

What are carbohydrates, Q. What are carbohydrates? Carbohydrates are i...

Q. What are carbohydrates? Carbohydrates are important organic compounds widely distributed in animals and plants. Plants can synthesize carbohydrates by the process of photos

Animals and biomedical uses of biodiversity, Animal products too are widely...

Animal products too are widely used in medicines by traditional societies, and in some urbanized societies that believe in traditional animal-based remedies. Examples of such produ

Principle of echocardiography, Echocardiography Utilizes principle of ultra...

Echocardiography Utilizes principle of ultrasound for visualization of heart and great vessels. It uses sound in the frequency of 1-10 MHz. As the frequency of probe increase

Define disadvantages of using bacteria as source of protein, Define Disadva...

Define Disadvantages of using Bacteria as a source of protein? Disadvantages of using Bacteria as a source of protein are as follow: a) If the bacterial strain is very small

Automated dna sequencing, Automated DNA sequencing is now common place whic...

Automated DNA sequencing is now common place which is based on the chain termination method but using a fluorescent dye attached to an oligonucleotide primer instead of using radio

Bergmann's method of cell plating, Bergmann's Method of Cell Plating I...

Bergmann's Method of Cell Plating In this method free cells are suspended in a liquid medium at a density twice the finally desired plating density. Melted agar containing med

List five advantages of dsme, Q. List five advantages of DSME? Followin...

Q. List five advantages of DSME? Following are the advantages of DSME. It enables the patient to 1. Accept the disease. 2. Gain knowledge about disease, its prevention

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