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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
Steroids are of many types . These are given below: a) Sterols : Cholesterol, ergosterol. b) Bile acids : Glycocholic acid, taurocholic acid. c) Hormones : Testoste
Paper manufacture: Paper was not used in India until the eleventh century. This Chinese invention of the first .century A.D. reached India mainly through the Ghorian conquerors
The Origin of Agriculture and Civilisation : There is no historical evidence to tell us exactly how agriculture arose. We can only imagine what may have happened. Cultivatio
what are the different respiratory disease in man . give their symptoms and cause
Photosynthesis: Carbon dioxide + water + solar energy + minerals -> food + oxygen Food made during photosynthesis may later be used for energy by the plant itself, or by a
Question 1 Analyse the Human - Ecosystem interactions Question 2 Discuss the importance of PPP in attaining sustainability Question 3 Explain the Benefits and c
why- 1) alcoholic acidity is determined? 2) ash content is important factor in wheat flour? 3)carbohydrates and sugar are separately denoted on pachaging material?
how does the heart work?
would quartzite or sandstone break more easily. please explain
What is the earth made of? The overall composition of the Earth, in terms of elemental composition is as follows: Iron 34.6% Oxygen 29.5% Magnesium 12.7% Silic
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