Endothelium - ovule, Biology

Assignment Help:

Endothelium - Ovule

In plants bearing unitegmic ovules, the nucellus degenerates during early stages of ovule development and the embryo sac comes in contact with the innermost layer of the integument. The cells of this layer become specialised to supply nutrients to the embryo sac. These cells elongate radially, their cytoplasm becomes dense and store starch and lipids. This specialised layer is called endothelium. Endothelium is also reported in some bitegmic ovules. Tapetal cells are similar to endothelium cells of anther in storing carbohydrates, proteins, RNA, ascorbic acid and other metabolites; it is secretory in function is hence referred to as the integumentary tapetum.


Related Discussions:- Endothelium - ovule

Membrane proteins and carbohydrate, The cell membrane is a slim semi-permea...

The cell membrane is a slim semi-permeable membrane which surroundings the cytoplasm of a cell. Membrane function is to defend the integrity of the interior of the cell by allowing

Organisms contain enzymes, Some organisms contain enzymes that condense a f...

Some organisms contain enzymes that condense a fatty alcohol and a fatty acid to generate wax esters. Draw decanol, plamitic acid (C16:0 fatty acid) and the resulting wax ester gen

Explain astrand cycle test, Explain Astrand Cycle Test? This is a sub m...

Explain Astrand Cycle Test? This is a sub maximal test done on cycle ergo meter. In this test, comparatively lower wattages are set. For example, for males less than 35 years o

Smoking of meat products, S m o k in g of Meat Products The purpos...

S m o k in g of Meat Products The purpose of smoking meat is to develop a distinctive flavour, aroma and appearance. These attributes can also be achieved with liquid smok

The progeny is expected to have homozygous genotypes, If a plant of genotyp...

If a plant of genotype A/a is selfed, and numerous offsprings are scored, what proportion of the progeny is expected to have homozygous genotypes?

What is Implant Failure, What is Implant Failure Implant Failure : Th...

What is Implant Failure Implant Failure : The total failure of implant to fulfil its purpose which are49 Surgical Complications, Long Term Implant Failures and Ma

Subphylum mastigophora, Subphylum Mastigophora One or more flagella p...

Subphylum Mastigophora One or more flagella present in adult stages; autotrophic or heterotrophic nutrition; reproduction usually asexual by fission. Class - Phytomasti

Define the properties of solutions, Define the properties of solutions ...

Define the properties of solutions Several properties of solutions are particularly important in food preparations. Amongst these are colligative properties, such as vapour pre

Brasseler endo extractor tube-endodontics principles, Brasseler Endo Extrac...

Brasseler Endo Extractor tube Insert H file buccally and lingually and remove silver by friction.If I can't remove use solvent to desolve cement If the tip of silver not appear

Biochemistry starch and dextrin test, Why there is difference in the colour...

Why there is difference in the colour obtained for the dextrin solution (ammonium sulphate and dextrin )when brought to iodine test Respetively by first half saturation test and t

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