Effect of temperature, Biology

Assignment Help:

Effect of Temperature

Certain plants such as the winter rye (Secale cereale) and the biennial strain of henbane (Hyoscyamus Niger) require exposure to low temperature conditions before they start flowering. A phenomenon known as 'vernalization' or 'Yaronization' was noted by the Russian Plant physiologist Gustav Gussner in 1915. Here also embryo or shoot apex seems to be the site of perception and the role of a hormone 'Vernalin" is suggested. Unfortunately like florigen, vernalin has been still elusive. Gibberellin treatment is known to substitute for cold treatment.


Related Discussions:- Effect of temperature

Photosynthesis and cellular respiration, what cell organelle does photosynt...

what cell organelle does photosynthesis take place in?

What body system hiv impairs, Given that most AIDS victims die from overwhe...

Given that most AIDS victims die from overwhelming infections or rare types of cancer, what body system do you think HIV (the AIDS virus) impairs?

What is meant by the substrates of enzymatic reactions, Q. What is meant by...

Q. What is meant by the substrates of enzymatic reactions? The Substrates are reagent molecules upon which enzymes act. The enzyme has spatial binding sites for the attachmen

How the molecule would increase in mass slightly, Suppose many of the atoms...

Suppose many of the atoms of nitrogen in a double-stranded molecule of DNA, of isotope N-14, were replaced with the isotope N-15. What afffect would this have? a) The nitrogeneo

Explain the stochasticity, Explain the Stochasticity? Ubiquitous noise ...

Explain the Stochasticity? Ubiquitous noise in biological systems creates stochastic methods central to modelling attempts. Stochasticity is available at all levels in environm

Loss-of-function mutations, Choose the correct answer. A. The phenotype det...

Choose the correct answer. A. The phenotype determines the genotype. B. True-breeding individuals are produced by repeated backcrossing. C. Recessive alleles are usually loss-of-fu

Enumerate the history of neuropsychological, Enumerate the history of neuro...

Enumerate the history of neuropsychological The typical neuropsychological exam begins with a careful history taking. Areas of interest include: Medical history of patie

Principle for presence of vanaspati and rancidity in ghee, Principle for Pr...

Principle for Presence of Vanaspati and Rancidity in Ghee Cheap edible and nonedible oils like argemone oil, white oil, tea seed oil etc. are used as adulterants in more expens

What do you mean by somites, Q. What do you mean by somites? Somites ar...

Q. What do you mean by somites? Somites are differentiated portions of mesodermal tissue longitudinally distributed along the embryo and the somites originate the muscle portio

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd