Dry stigma - category of stigma, Biology

Dry Stigma - Category of Stigma

The Cotton (Gossypium hirsutum) stigma is covered with long unicellular hairs. At the time of pollination, the stigmatic hairs show a distinct and continuous cuticle which is closely pressed to the thin wall. The pellicle that represents extracellular proteins are present on the dry stigma. In addition, the stigmatic surface also carries lipids and phenolic substances. Immediately below are several layers of a thin-walled parenchymatous tissue with large intercellular spaces. The size of the intercellular spaces gradually decreases until no such space is present and the cell wall thickens with heavy pectin content. This tissue provides a connecting link with the transmitting tissue.

Posted Date: 1/23/2013 3:05:52 AM | Location : United States







Related Discussions:- Dry stigma - category of stigma, Assignment Help, Ask Question on Dry stigma - category of stigma, Get Answer, Expert's Help, Dry stigma - category of stigma Discussions

Write discussion on Dry stigma - category of stigma
Your posts are moderated
Related Questions
Explain the Modes of Ventilation? In general, mechanical ventilation can be done to deliver a set tidal volume (volume controlled) or a set pressure (pressure controlled). Some

Q. Non - Direct Approach to counseling? The counsellor's participation is minimal; here the counsellee freely expresses. The counsellor pays attention to the emotion and attitu

Role of Private Sector in Health Care One of the biggest policy challenges for the government is to decide on the appropriate areas and a suitable policy framework for having

Surplus red blood cells, required to meet an emergency, are generally stored in what organ of the human body? Is it the: a) Liver b) Spleen c) pancreas d) Kidneys

Why isn't the cooking of vitamin C-containing foods appropriate for vitamin C supply? To obtain vitamin C, for example, from an orange dessert, the vitamin-containing food cann

State the term - Focal Seizures A focal seizure begins in one place and then spreads. As for example in a Jacksonian focal seizure, the attack begins with jerking movements in

How does the male gamete penetrate the egg cell? How does the female gamete protect itself from the entrance of more gametes after the entrance of the first sperm cell? The spe

Activated carbon has a much higher adsorption capacity than other materials. Carbon adsorbs objectionable odours, flavours, organic compounds and many hazardous chemicals. There

A fruit fly has four pairs of chromosomes in its cells. At meiosis, how many dissimilar combinations of maternal and paternal chromosomes are possible in the gametes? In gamet

Explain the chemical properties of milk Autoclaving milk, wherein temperature of around 121 o C is achieved, causes browning. The brown colour is due to the heat effecting an i