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Temperature - Seed Dormancy
Low temperature treatment is an essential prelude to germination in many seeds, and high temperature may be inhibitory at the time of germination. The low temperature chilling requirement is frequently met artificially by the process of stratification. The seeds are layered in trays in cold moist air for a period of several weeks or months. Temperatures between 0 and 10?C are most effective. The chilling requirement is variously located in the embryo or the seed coat, sometimes in both. The chilling requirement of apple seeds, for example, is much longer for intact seeds than for seeds with the coats removed, or for isolated embryos. Red light and GA have a synergistic effect, that is, the combination of both factors stimulates germination more than the sum of the two separately.
EMBO L Y - The embolic morphogenetic movements are concerned with the inward migration of prospective endodermal and mesodermal blastomeres from the external surface of blast
Nicotinamide nucleotides These coenzymes are derived from the vitamin, niacin. They are of two types, nicotinamide adenine dinucleotide (NAD') and nicotinamide adenine dinu
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SPINAL NERVES 31 Pairs. Mixed type. Total weight 150 gms. At the base of origin of spinal nerves gland of swammardon or calcarious ganglion is present. Composed of m
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What is Form Sense Form Sense is the faculty which enables us to perceive the shape of objects in the outer world. Here the cones play predominant part, and the form
Q. Guiding and overseeing actions of Consciousness? Guiding and overseeing actions: Consciousness connects brain and body states with external occurrences. In order to functio
mendal laws
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