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
Give an example of how a functional group can affect the elements of an organic compound. The hydroxyl group on alcohols is polar and this produces alcohols polar compounds.

Q. Why can the amnion also be considered an adaptation to terrestrial life? The amnion is as well an adaptation to dry land since one of its functions is to prevent desiccation

Define Types of Root Canal Perforations According to size According to size: Small perforation: ( smaller than #20 endodontic instrument ) mechanical damage to tissue is

In the prokaryotes,  RNA transcribed  from protein-coding  genes or messenger  RNA, mRNA,  need  little  or  no  changes  prior  to  translation.  In reality, several mRNA   molecu




Explain how a cell produces and releases proteins. Proteins are made on ribosomes and packaged into vesicles by the Golgi apparatus. The vesicles move to the cell membrane and

Overheating the bone and exerting too much pressure Minimal temperature elevation during surgical drilling of the bone is a key factor in atraumatic surgical technique. Bone ce

Explain Risk Analysis Risk  Analysis  :  A  process  consisting of three components:  risk assessment,  risk  management  and risk communication