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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.
All of the following make meiosis different from mitosis, EXCEPT A. Meiosis comprises two separate divisions. B. Meiosis only occurs during embryonic development. C. Chromosome num
Which of the following serves as an effector, or as part of an effector, that functions in a negative feedback system? A. Glucagon Receptors in the plasma membranes of alpha-is
What was the case of Phineas Gage Some Procedures are not used experimentally on humans, but sometimes brain tissue is ablated for medical reasons such as the excision of tumo
Explain National Nutritional Anaemia Prophylaxis Programme (NNAPP)? In past, both access to and intake of iron-folate tablets have been poor in children and therefore had a lit
CHOLINE Found in egg liver & kidney. Synthesized in body with acetyle coA. It forms acetylcholine. Deficiency causes damage to kidney.
You measure the stability of your favourite protein kinase and find that half of the protein is degraded every 10 minutes. How might you test whether the protein is degraded throug
Explain the Dark Adaptation of Vitamin A? In the early stages of VAD, the individual cannot see objects in dim light. This' phenomenon is used as a criterion for assessment in
What are Goitrogens? Certain chemical substances like thiocyanates, phenols, disuphides, flavanoids etc, found in the environment, can interfere with iodine metabolism. These s
Cytokinesis It is defined as the division or cleavage of cytoplasmic part of the cells into two daughter cells. It is first indicated during late anaphase by app
The biologicaI species concept claims that species consist of natural populations and that species are real and objective. They are not man-made subjective abstraction. According
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