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!
Cellular Totipotency
The innumerable cells which constitute the body of a higher plant or animal and containing identical genetic material can be traced to a single cell-the zygote. During development cells undergo diverse structural and functional specialisation depending upon their position in the body. Leaf cells bear chloroplasts and act as the site of photosynthesis. The colorless root hairs perform the function of absorbing nutrients and water from the soil and some other cells become part of the colorful petals. Normally fully differentiated cells do not revert back to a meristematic: state, which suggests that the cells have undergone a permanent change. Earlier you know that the regenerative capacity is retained by all living cells of a plant. Several horticultural plants regenerate whole plant from root, leaf and stem cuttings. Highly differentiated and mature cells such as those of pith and cortex and highly specialised cells as those of microspores and endosperm retain full potential to give rise to full plants under suitable culture conditions. G. Haberlandt was the first to test this idea experimentally. This endowment called "cellular Totipotency" is unique to plants. Animal cells possibly because of their higher degree of specialisation do not exhibit Totipotency. Whole plant regeneration from cultured cells may occur in one of the two pathways:
1) Shoot bud differentiation, (organogenesis) and
2) Embryo formation (Embryogenesis).
The Embryos are bipolar structures with no organic connection with the parent tissue and can germinate directly into a complete plant. On the other hand, shoots are monopolar. They need to be removed from the parent tissue and rooted to establish a plantlet. Often the same tissue can be induced to form shoots or embryos by manipulating the components of the culture conditions.
Define beneficial effects of functional foods? Several beneficial effects of functional foods have been reported, which include effects such as antioxidant, anticarcinogenic, b
Types of Leukemia Leukaemia may be chronic or acute and is classified into the following categories: i) Acute Lymphocytic Leukaemia (ALL) This is the most comm
Enzymes utilization in Brewing Industry Here, the main starting material is malt, produced by allowing barley seeds to germinate under moist conditions. The reserve starch is b
describe in details charateristics of two sub phyla of phylum anthropoda
How can the fact that fishes and dolphins have similar organs and similar general shape be explained? Dolphins and Fishes have similar organs and shape because although they ha
Are the alleles of a gene essentially originated one from the father and the other from the mother? Are there exceptions? It is natural so that alleles have come one from the m
Q. What are the classes of lipoproteins in the blood? Blood lipids (cholesterol, triglycerides and phospholipids) being insoluble in blood need a ship to travel in our body; it
Q. Principles of Binomial Nomenclature? There are certain, basic principles of binomial nomenclature which are as follows: i) Different nomenclatural systems are independent
CELL COAT (GLYCOCALYX) Present in Protists and animal cells. Usually made of oligosaccharide side chains of glycolipids and glycoproteins. Cell coat has very charged t
Cardiac Cycle Cardiac cycle has two phases-systole and diastole. Ventricular systole and diastole occur as a result of depolarization and chamber volume and pressure. The di
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