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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
Carbon l4 with a half-life of 5,568 years is used to date a sample of wood. Sample has l/8 the carbon l4 contained in a living tree of same species. Approximately how old is specim
Microwave Processing Factors Frequency: There are two available frequencies for microwave heating - 915 and 2,450MHz; the frequency affects the depth of penetration into
Explain causes of Fever - Immune System We have seen that due to injury, cut or bite, the inflammatory response develop and this is localized or systemic. The localized respons
Why does a glacier move? It moves due to the huge pressure of the ice and snow lowers the freezing point of its lower layers, causing by to melt.
Q. List the main steps involved in the preparation of oil from oilseeds? The main steps involved in the preparation of oil from oilseeds are: preparation of the raw material,
Explain Acute Phase Proteins Following any infection, there is a rise in concentration of several plasma proteins. The best known amongst them are C- reactive proteins (CRP) wh
Weighing moisture again The similar experiment can be done with a bath towel. Wet the towel and wring it out. Hang it on a coat hanger. Hang the coat hanger on single end of a
Explain the Types of White Blood Cells White blood cells are actually a whole collection of different cells that work together to destroy bacteria and viruses. You may recall s
Explain the Functions of Stomach 1. Mechanical function: Muscular action of the stomach helps in the mixing of food with the digestive juices and also helps to propel the food
What are the Climatic factors of fertilizer requirements These include temperature, rainfall and its distribution, evaporation, length of day and growing season. A cool clima
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