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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.
Patterns of Metamorphosis The pattern of metamorphosis is not the same in all insects and so metamorphosis can be broadly classified into 3 types: (1) Complete metamorphosi
Describe about diagnostic approach for congenital heart disease ? In this section we propose to outline the principles of a diagnostic approach that is applicable to newborns,
There are three steps of PCR a) Denaturation. The reaction combination is heated to 95°C for a short time period (about 15-30 sec) to denature the goal DNA into one strands w
Explain about the Anti Obesity Drugs? The anti-obesity drugs can be classified into two broad groups as indicated in the Figure. Drugs must be taken only under Doctor's
(i) Effect of Human Health: (a) Mercury compounds in waste water in converted into methyl mercury by Bacterial action which causes numbness of limbs, lips and tongue, deaf
Body Fluids of Marine Teleost The body fluids of marine teleost are hypotonic to seawater, so these fishes lose water to the environment especially across the gill epithelium.
Define Systematic Botany - Taxonomy? We will now learn something mare about systematic botany. The early recognition of harmful and useful plants was the beginning of systemati
How life exist in earth?
Q. Is there respiratory pigment in the annelid blood? The blood in beings of the phylum Annelida contains the respiratory pigment hemoglobin the same found in chordates and oth
Explain about the Glycemia or Insulinemia? Preliminary research evidence indicates that there may be beneficial effects in terms of decreased fasting blood glucose/hepatic gluc
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