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Q. Show the Embryological Evidence?
Embryology is the study of the successive stages of sporogencsis , gametogenesis and the growth and development of the embryo. The number of nuclei in the pollen grains at the time of pollen dispersal is either two or three. Double fertilisation is an example of embryological unity throughout the angiosperms. Based on the number of cotyledons, monocotyledons are separated from dicotyledons. The binucleate pollen is derived. Embryology has had systematic significance in the grass family, where with several other characters it has been used to revise the family's classification. In animals the embryological evidence is of great significance, e.g. the Anopheles maculipennis complex is broken into a number of sibling species on the basis of their egg structure. In Dacus oleae and ceratitis capitata.(fruit flies) the whole eggs are separated on the basis of the character of anterior pole and the whole classification of white flies is primarily based on the structure of their pupae.
Dose-scaling Toxicological equivalent doses in animals and humans are a debatable issue. The Joint FAOIWHO Expert Committee on Food Additives (JECFA) and Joint FA01 WHO Meetin
What is Growth Monitoring? In third world countries, about half the children are short and underweight for their age. Inadequate nutrient intake is the main reason. Inadequate
General characters of mollusca
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Explain the Sedimentation - Air Sampling? It is the simplest method, which involves exposing agar plates in air for specified time at a location to be sampled. Microorganisms
How many alleles of genes that condition X-linked traits do female and male individuals respectively present? For every correspondent gene to an X- linked trait women present a
what is agar shake method
Explain the history of Darwin's Finches? The most well known evidence upon which Darwin based his theory was the distribution pattern of the Galapagos finches. The Beagle's voy
PO L YSACCHARIDES Polysaccharides are complex carbohydrates. Polysaccharides are also called glycans. These are insoluble in water. Polysaccharides are not swee
what is cell and what are the components of cell
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