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.
Q. Explain about Podophyllum? These species were long used by indigenous people in Americea and Asia, including for the treatment of skin cancers and warts. The combination of
Q. What is Gastritis? Gastritis is an inflammatory lesion of the gastric mucosa, (the inner lining of the stomach). The problem is seen in two forms: a) Acute gastritis
There are specific sensitive/critical periods in development during which acquisition of certain skills is substantially easier than at other times. In the animal domain there are
Define Drug Effects on Food Intake - gastro intestinal tract? Affect the gastro intestinal tract: Gastrointestinal irritation and ulceration are serious problems with many drug
Explain about the supply curve or supply schedule. The supply curve or schedule shows the total quantity of a good or a service supplied within aggregate, by whole sellers or f
Define Titrimetric Estimation of Carbohydrates? The Fehling's Soxhlet method is the commonly used method for titrimetric estimation of carbohydrates. In the following section y
Define Water Output (Losses of body water) - Renal loss? Water is lost from the body by the four routes, namely kidneys (renal system), skin, lungs and intestine. Let us discus
Phosphorus Cycle - Nutrient Cycles Phosphorus is a very important nutrient because of its role in the form of phosphate, in reactions that store and release energy. The availa
Histone methyl transferases (HMTs) having a protein domain called SET. This domain is responsible to adding methyl groups to histones. Which of the following is a false statement r
Q. Phylogenetic species concept ? Taxonomists (scientists who compare, classify and name organisms) tend to describe a species by studying their physical characteristics and be
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: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd