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

Describe the general examination of clinical examination? It is always to better to ask the patient to help himself/herself in setting on to the examination table and rename so

Pulmonary Regurgitation :  Most of the clinical cases are after balloon valvotomy or surgical valvotomy using a trans annular patch. It can be quantified by Echocardiography and D


Q. What are the major human diseases caused by roundworms? The major human diseases caused by nematodes are ancylostomiasis, ascariasis (hookworm infection) and filariasis (com

What is the mechanism described by Darwin that eliminates species less adapted to environmental conditions? The mentioned mechanism is the natural selection.

Q. Show the Seating the abutment? The clinician will need to ensure that the abutment is completely seated.A radiograph may be required to confirm complete seating. Abutments u

Defence mechanisms of the host The healthy animal is protected from pathogenic organisms present in the environment by virtue of the effective immune mechanism present from bi

what is steroid production by microbial metabolism

Assessment   Infective endocarditis  is characterised  by insidious onset of fever, malaise, night- sweats and weight loss. Other signs include vomiting, fatigue, headache, mya