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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
Explain in detail about the Sedimentary rocks Sedimentary rocks are formed from the breakdown of igneous rocks. These rocks are broken apart by plant roots, ice wedges, and
INTRODUCTION: Here, we shall explain the regulations which are directly or indirectly concerned with laboratory work. These regulations have legal validity. As compared to laborat
How to make soap Soap can be made from waste fat. Secure some waste fats and melt in a dish. Strain the fat by several layers of cloth. Weigh the fat and then weigh out about o
Air pollution by Particulates: Particulates constitute the third category of air pollutants. These are mostly fine carbon particles (less than 0.002 mm in diameter) formed b
ferdland wegener
Explosives : As defined earlier, explosives release a large amount of gas and energy in a very short time. These are of four basic types: Mixed gases - Usually the mixture
Define General Hormones General hormones, on the other hand, are emptied into the blood by specific endocrine glands and then flow throughout the entire circulation to affect c
Explain the Mechanics of Respiration The process of respiration can be well understood by studying the mechanism of respiration. This can be explained through a respiratory cy
What is Dry manure Dry manure though contains 80 percent carbon, yet it is considered primarily as a nitrogen fertilizer and, to a lesser extent, one of potassium. Losses of nu
The industry dealing with hazardous materials should draw emergency disaster plan. Safety committees consisting of workers and management are required to review from time to tim
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