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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.
What is the chemical equation of photosynthesis? The chemical equation of photosynthesis is the following: 6 CO 2 + 6 H 2 O + light --> C 6 H 12 O 6 + 6 O 2
Why is not Mendel's second law always valid for two or more phenotypical traits of an individual? The Mendel's second law, or the law of the independent assortment, is valid fo
Fracture - It is a break of a bone. Bone fracture are of many types - (i) Green stick fracture - It is merely a crack, the bone remains partly intact. (ii ) Sim
Explain the Confirmed Test - Most Probable Number Test? Confirmed test is carried out to rule out the possibility of any positive presumptive test because of the presence of no
Q. Phylogenetic species concept ? Taxonomists (scientists who compare, classify and name organisms) tend to describe a species by studying their physical characteristics and be
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Structure of Blastula The structure of blastula turns into modified in several animal groups. The changes are related to the amount of yolk deposited in the egg, as you will s
Q. Signs of constrictive pericarditis? 1) Jugular venous pressure (JVP) is elevated in all patients of CP which reflects the elevated diastolic pressure of the right atrium.
Define Immediate Preoperative Period during Surgery? Nothing should be given by mouth for at least 8 hours before a general surgery so that the stomach has no leftover food at
Describe the properties of gum ghatti Important property of gums referred to as 'viscosity' and the effets of pH. Gum ghatti does not form true aqueous solutions but form visco
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