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Flower - Plant Growth Substances
Floral initiation is a dramatic event involving a total changeover of the character and developmental pattern of the meristem. The stimulus can be internal i.e. age of the plant, endogenous hormones etc. and external factors like light (photoperiod) and temperature (vernalisation) as well.
External stimuli are perceived by a pigment called phytochrome which in turn triggers a series of steps including gene activation, new enzyme synthesis and rise of endogenous hormone levels. It is also possible that certain quiescent cells in the meristem may be carried along at the apex and become activated during floral initiation. However, it is also possible that genes which control floral initiation are different from those responsible for leaf development.
Habitat Conservation - Conservation of Wildlife Actually conservation means different things to different people. In the present context, conservation refers to the preservati
Explain about the Spectrophotometer? The spectrophotometer, a key instrument today in biomedical laboratories, was invented in 1939 by the American chemist Arnold O. Beckman (1
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Determine the Causal factors of nervous system Although, the brain and spinal cord are surrounded by tough membranes, enclosed in the bones of the skull and spinal vertebrae, a
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The parasite completes a part of its life histroy in man in two stages. They are : a) Pre-Erythrocytic cycle. b) Erythrocytic cycle. 1. When an infected female Anopheles mosquit
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Explain Herbals of Brunfels? Between the years 1530 and 1536 Otto Brunfelsius (Brunfels) (1463-1534) published his 'Herbal' which consisted of descriptions of a large number of
Role of citrate Citrate in addition to being an intermediate of citric acid cycle provides a source of acetyl CoA for the cytosolic synthesis of fatty acids. Citrate inhi
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