Nucellus - ovule, Biology

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.

Posted Date: 1/23/2013 1:08:01 AM | Location : United States







Related Discussions:- Nucellus - ovule, Assignment Help, Ask Question on Nucellus - ovule, Get Answer, Expert's Help, Nucellus - ovule Discussions

Write discussion on Nucellus - ovule
Your posts are moderated
Related Questions
Preparation on the Morning of Surgery Morning care  Hygiene Bowel and bladder emptying.  Oral hygiene, remove dentures if any, no lipstick.  Comb and make th

Insulin was the first protein to be sequenced biochemically. Assuming that there were no introns involved in the process, what are the possible DNA sequences that produced the last

Secondary Prevention: The various aspects of  secondary prevention are:  1)  Early Diagnosis  and  Case Finding  This can be achieved by  educating the public and commun

How can I construct a fat molecule whose fatty acid tails are 4 carbon atoms long

how do i classify mythical creatures into a web?


how to make question on classification of Protozoan parasite

Three point charges are located at the corners of an equilateral triangle. Find the magnitude and direction of the net electric force on the 1.60 uC charge. (Let A = 1.60 uC, B= 6.

Unsaturated fatty  acids Unsaturated  fatty  acids  are  liquid at  room  temperature  and  are characterized by having one or more double bonds. Fatty acids having two or more

In his experiments, Mendel noted that when two traits are involved in a genetic cross, they are inherited independently of each other. The reason for this is that A. genes on the s