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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.
Explain the Management of Middle - Third Perforation Same to coronal one-third perforation, except defects located more deeper from the access cavity. For successfully
If a plant of genotype A/a is selfed, and numerous offsprings are scored, what proportion of the progeny is expected to have homozygous genotypes?
Development of Pollen in Cyperaceae In all members of the Cyperaceae out of the four nuclei formed after meiosis, only one functions, the others degenerate. The functional nuc
Q. What are age pyramids? Age pyramids are the graphical representations in form of superposed rectangles each representing the number of individuals included in age ranges int
a) Mention the scientific term used for modified form of reproduction in which seeds are produced without fusion of gametes. b) What does ecological niche of an organism represe
why is it necessary to grind food before the testng?
Mechanisms of different species of animal In an animal when the need to change the focal power of the eye arises, different mechanisms are there in different species of animal
Clotting Disorder - Haemophilia Haemophilia is a congenital blood clotting disorder caused by the genetic lack/ deficiency of coagulation factor VIII or antihaemophiliac
Explain the Escherichia - Characteristics of Bacteria? It belongs to order Enterobacteriales. It is the best-studied organism present in the colon of humans and other warm-bloo
What is the Importance of vitamin B 12 Vitamin B 12 deficiency is manifest by the symptoms of pernicious anaemia (Addison-Biermer's disease). An irreversible atrophy of the
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