Nutrition of embryo - in vivo studies, Biology

Nutrition of Embryo - In Vivo Studies

The young proembryo derives its nutrition from ovular tissues with the help of suspensor. As the embryo develops its suspensor degenerates. Later the chief source of nutrition of the embryo inside the developing seed is the endosperm. By the time the proembryo attains a late globular state, and its suspensor becomes disfunctional, the endosperm is generally already a cellular tissue surrounding the embryo on all sides. The developing seed is a powerful sink for nutrients.

Food materials received through the funicular vascular supply, are absorbed by the endosperm and passed on to the embryo for its growth and development. The central cell wall has transfer cells for absorption of nutrients. Sometimes persistent antipodal cells or special structures such as hypostase and postament of the ovule help in translocation of food to the endosperm. After the embryo is fully grown, the endosperm persists in a large number of plants, particularly monocotyledons, storing starch or oil or protein or all the three. These are used up during seed germination. In other plants no endosperm may persist in the mature seed as the cotyledons store food reserves. Legumes are the best examples and have been the subject matter of research on storage proteins in recent times.

Posted Date: 1/23/2013 7:43:10 AM | Location : United States







Related Discussions:- Nutrition of embryo - in vivo studies, Assignment Help, Ask Question on Nutrition of embryo - in vivo studies, Get Answer, Expert's Help, Nutrition of embryo - in vivo studies Discussions

Write discussion on Nutrition of embryo - in vivo studies
Your posts are moderated
Related Questions
Explain the Types of cell Reproduction ? One of the major characteristics of living organisms is their ability to grow and reproduce. This is accomplished by cell division. In

Phosphorylation  of  fructose-6-phosphate Phosphorylation  of  fructose-6-phosphate: This  is  an irreversible reaction, catalyzed byphosphofructo72Snase,  (PFK-  I) a rate-l


What are the antigens and the respective antibodies of the ABO blood group system? The ABO blood system contains the erythrocytic antigens A and B that can be attacked by the a

can you give brief diagram of the tracheal system of cockroach?

discuss the importance of protozoa to humans

Explain process of Determination of vitamin B 6 Colorimetric determination of indophenol dye using 2,6-dichloroquinone chloraimide as colour reagent or diethyl-p-phenylenediam

Define the Clinical success for the Root Canal Treatment a) Absence of pain and swelling. b) Disappearance of sinus tract. c) No evidence of soft tissue destruction, incl

Q. What are the main biological functions of water? Water is the basic solvent for chemical reactions of living beings; it is the main means of substance transportation in the