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State the important role of microorganisms
The important role of microorganisms was recognised as early as 1838, when J.B. Boussingeutt a French agricultural chemist observed that legumes could utilise the atmospheric nitrogen for their nutrition. It was further confirmed when, M.W. Beigerinch, a Dutch scientist, isolated bacteria from root nodules of legumes. Investigations have shown that soil is not an inert body but a medium pulsating with a large number of microbes that are always viable and active and thus full of life. These organisms transform soil structure as part of their normal activities and add fertilizers and organic matter to the soil.
Q. Describe about defecation reflex? An example of a reflex having an autonomic (and somatic) component is the DEFECATION REFLEX: The rectum is generally empty, but when fec
Homomorphic Types - Intra specific Incompatibility It is characterized by morphologically indistinguishable mating types within a species. A proper breeding is required for th
Define about the Storage of Zinc in Humans? Zinc is found in most organs, concentration being higher in liver, kidney, muscle, skin and bone. Zinc content of muscle, brain, lun
Glyceraldehyde has a one asymmetric carbon atom the central one and so two stereoisomers which is also known as optical isomers are possible, which is two forms of glyceraldehyde,
Ecosystems are so varied in form and structure that whatever has a distinct community of its own, can be called an ecosystem eg. A crop field, grass land, barks etc. all the ecosys
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Growth Regulators Besides the major five hormones, polyamines can also exert regulatory control over growth and development at micromolar concentrations. They are widespread a
Where do the photochemical and the chemical stages of photosynthesis occur? The photochemical stage of the photosynthesis process happens mainly on the thylakoids (the green pa
Omnispective Classification This is the extension of the concept of natural classification put forward by Black Welder (1967). The approach seems quite realistic and pragmatic.
C4 plants have higher net photosynthetic rate because a.they have no photorespiration b.can photosynthesise in low in
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