Composite endosperm - variants of endosperm, Biology

Composite Endosperm - Variants of Endosperm

In the family Loranthaceae, the development of endosperm is unique. The ovary lacks ovules. The sporogenous tissue located at the base of ovary develops several embryo sacs which elongate considerably, some of them even entering the style. After fertilization, the primary endosperm nucleus of each embryo sac moves to the basal part where it divides to form cellular endosperm. During further development, the endosperms of all the embryo sacs in an ovary enlarge and become fused to produce a composite endosperm mass. Several proembryos belonging to individual embryo sacs with long suspensors develop but only one survives and attains maturity.

Posted Date: 1/23/2013 6:53:00 AM | Location : United States







Related Discussions:- Composite endosperm - variants of endosperm, Assignment Help, Ask Question on Composite endosperm - variants of endosperm, Get Answer, Expert's Help, Composite endosperm - variants of endosperm Discussions

Write discussion on Composite endosperm - variants of endosperm
Your posts are moderated
Related Questions
What is factor VIII? What is the genetic disease in which this factor is absent? Factor VIII has the function of activating factor X that in its turn is essential for the trans

Neurotransmitters We know that transmission of signals from nerves to muscles is affected by acetylcholine a transmitter substance. Similarly neuron-neuron transmission is als

CRITICISM OF DARWINISM - Arriva l of the fittest: Darwinism explains the survival of the fittest but was unable to account for the arrival of the fittest. V estigia

Q. What are the roles of ATP and NADPH in the chemical stage of photosynthesis? NADPH acts as reductant of carbon dioxide it delivers highly energetic hydrogen to precursor mol

Why have biologists and bioinformaticians embraced the Web as a vehicle for disseminating data so quickly, whereas clinicians and clinical informaticians have been more hesitant to

How Body size and composition affecting the BMR? Basal and resting energy expenditures are related to body size, being most closely correlated with the size of the fat-free mas

Improvement of Soil Aeration Soil organisms greatly improve soil structure and facilitate aeration. Root decay leaves the soil riddled with channels, and the burrowing of worm

Explain the Distant Osteogenesis In this an extracellular matrix establishes the implant surface contact. The osteogenic cells line the host bone surface. The blood supply to t

What is enzyme kinetics The study of the rate at which an enzyme works is called enzyme kinetics.

Define Principle of Detection of Metanil Yellow? Non-permitted colours like lead chromate, metanil yellow, auramine, rhodamine B are used to brighten the foods especially spice