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!
Senescence
Plants begin their development after seed germination. They grow, flower and finally senesce and die. The period from the start to death is called the longevity or age or life span and this period varies from species to species. For example, some plants, like annuals, complete their life cycles within a few months whereas others live for a few centuries. For example, the life of Juniperus scopulorum is around 3,000 years. The period just before death is called the senescent period.
This may be compared to old age in animals. In this period deterioration occurs because there is a consistent decrease in viability and increase in vulnerability. This phase can be prolonged but cannot be reversed. Senescence may occur very quickly or may be a very slow process. In a plant sometimes the individual organs senesce while the whole plant may remain healthy. In annuals, the whole plant dies; in biennials, the plant dies only after two years, whereas in perennials, year after year the leaves and fruits are shed but the main plant survives.
EPIBOLY - The epibolic movements occur only in the prospective ectodermal blastomeres. In the blastula of frog, migration and rearrangement of microceres over megameres i
GIRDLES - (i ) PECTORAL GIRDLE - 4 bones. It is located on posterolateral part of upper region of the throax. It consists of scapula & clavicle. Scapula is placed
A biomolecule is any molecule that is produced by a living organism, including large macromolecules like proteins, polysaccharides, lipids, and nucleic acids, as well as small mole
a) Mention the main cause of air pollution in metro cities. Write any three ways by which it can be decreased. b) How did Eli Lilly synthesize the human insulin? Mention
Skin The skin or integument is the outer covering of the body and have appendages i.e. nails and hairs. The outer layer of skin is known as epidermis; the inner layer is dermis
The various types and their description of Heart failure are as follows: Left Sided Versus Right Sided Heart Failure Predominantly left sided failure is seen in left ventr
What is the capillarity? How this phenomenon chemically explained? What is relevance of the capillarity for water transport in plants? The Capillarity is the phenomenon through
Q. Definition of Osseointegration From the view of the patient? An implant fixture is osseointegrated if it provides a stable and apparently immobile support of a prosthesis un
Q What are the kinds of cell respiration? There are two types of cell respiration aerobic cell respiration a reaction with participation of molecular oxygen (O2) and anaerobic
Explain about Ridge mapping Ridge relationship is also critical especially in cases with multiple implants and fixed prosthesis, which is an advanced treatment procedure. But,
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