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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.
Stems transport liquids (a) Cut about 2 cm from the end of stems of celery and place them in cold water for about an hour to freshen. Next place the stems in dishes having red
The nitrogenase complex is extremely sensitive to inactivation by O2, so the enzyme must be protected from this reactive substance. During the root nodules of legumi
Explain Antiarrhythmic Drugs? Amiodarone may be considered in VT/VF that is refractory to shock. It might be given if the third shock is not successful. The dose is 300 mg IV i
Lengthening of long bones in humans takes place in a specific area of the bone. This area is known as the: a) Cancellous bone b) Medullary canal c) Periosteum (pron: per-
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in natural vegetative propagation which structure gives rise to new individuals?
Distinguish between epithelial and connective tissues with respect to their cell arrangement? PROVIDE a specific example (for both tissue types) of how the arrangement of cells hel
Q. Explain Femoral Approach? This approach involves the insertion of a catheter over a guidewire i.e. inserted into a sheath in the right femoral artery. Systemic anticoagulati
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