Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
IAA Stimulates Cell Enlargement
Cell wall contains layer of cellulose fibrils and are normally quite rigid. Thus for a cell to grow, there must be a mechanism for relaxing the cellulose fibrils. IAA releases the cross linking bands which hold the micro fibrils together. Auxin is thought to cause the walls to become plastic and them osmotic water intake causes the cell to swell like a balloon. American physiologist P.M. Ray has observed that IAA effect on elongation begins after a lag period of only 8-12 minutes, in tissues as coleoptiles. Recently it has been found that with certain auxins or even with IAA itself when used under correct conditions, the lag period can be reduced to 1 minute or less.
These effects are now considered to be as a result of activisation of proton pumps in membrane that pump protons in cell wall and cause a rise in acidity. Acidification loosens bonds in cell wall and cell wall plasticity increases. This rapid response is followed by activation of m-RNA translated into enzymes that catalyze synthesis of cellulose and other cell wall materials which cause the strengthening of elongated cell wall completing the cell elongation.
What is the typical morphological feature of nematodes that differentiates them from platyhelminthes? Nematodes are also called as roundworms. As the name shows they are not fl
While studying evolution, a student comes across a cladogram that includes clades like amphibia, reptilia, aves, and mammalia. What must be the basal clade?
The heart is enclosed in a membranous sac called the pericardium. It has two layers- the fibrous pericardium which is the outer layer and the serous pericardium that lies inside th
uses and advantages and disadvantages of immunolocalization
Q. What is the main risk factor for skin cancer? The major risk factor for skin cancer is solar exposition of the skin without protection against ultraviolet radiation (a poten
What is the monohybridism? The Monohybridism is the study of only one characteristic in the crossing of two pure individuals (hybridization) for that characteristic.
Define the Disturbances in Fluid Balance? The correct functioning of cells and tissues depends on appropriate concentrations of nutrients; so any abnormal loss or accumulation
Question 1 What is standard operating procedure manual (SOP)? Do you think it is important to maintain SOPs in all the laboratories? List the advantages of maintaining SOPs in
Q. Percentage ratio of total Solids and Water in honey? Most genuine honeys contain 13-23 per cent of water. The total solids or moisture can be estimated by drying in a vacuu
EYELID S - 3 in number. Dermis is thinnest in it. Upper and lower eye lid with eye lashes. Upper eye lid is more motile In reptiles lower eye lid is more motile. In cycl
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd