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Dissecting simple flowers
Label each of five cards or pieces of White paper with one of the following words: stamens, pistil, petals,sepals, receptacle. Dissect a flower carefully and place the parts gently on the appropriate cards .
Some flowers can be pulled apart quite easily but a knife or scissors may be needed for others kind of flower. When we have a sufficient number of flowers available this exercise is most Important as an individual pupil activity. Simple flowers with a single row of petals should be selected.Pick up one of the stamens and rub the anther lightly across a piece of black paper. Traces of pollen will usually be seen by you.Cut the ovary crosswise with a sharp knife gently and count the ovules or "seed pockets". Look for traces of seeds in the ovules
Define Fats - Nutritional Components Once the body stops eating, it begins to live on its fat. Fat storing depots 'adipocytes' are located in the different parts of the body. I
Explain the Physiology of Lactation Lactogenesis is the onset of copious milk secretion around parturition, triggered by a fall in plasma progesterone levels. Although some col
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Forest and hill soils The hill and forest soils seem to be akin to soils developed in humid temperate regions, and have been found to include podsolised soils, brown Earths an
Floating a razor blade Secure a used razor blade of the double edge type. Try floating it on the surface of water. Again watch the surface and see if the surface film dips unde
b) discuss briefly the scientific and technical achievements of the bronze age
if a force of 26 n is exerted on two baLLS one with a mass of 0.52kg ands the other with mass of 0.78kg which ball will have the greater acceleration explain
Explain Monocytes - Types of White Blood Cells They are motile and occasionally show phagocytic activity. They form only 5% of leukocytes, capable of providing more phagocytic
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Explain somatic mutation theory of ageing Random mutation makes the cells inefficient. An increase in the number of mefficient cells in an organ impairs their functioning. Rand
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