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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
Biological evolution We can presume that biological evolution began with the formation of the first true cells. These must have been forms that did not require free oxygen
ehat is protoplasm and other levels of organization
For all other wastes i) Burial The spillage could be buried using any of the following methods: The spillage could be mixed with sand and buried deep. Examples: Iodine
Please furnish me with the basic restoration plan for the Marshall wetland located in Liberia. This wetland is of mangrove type, has invasive species (c. Odorata, has a physical p
What is the Iimportant consequence of soil aeration Another important consequence of soil aeration is oxidation-reduction reactions that take place in soil and this may decide
Ascorbic Acid (vitamin C) Although the antiscorbptic (preventing the disease scurvy) effects of citrus hits was known for a long time, the first important step towards its
The effect of soap on surface tension Select a large plate and rinse it unless you are sure that it is very clean. Fill the plate with cold water and let it stand for a time on
A 12.8 Kb circular plasmid is digested with the following restriction enzymes, resulting in the pattern of bands indicated. BamHI 12.8kb HindIII 9.3kb + 3.5kb B
Important physico-chemical properties of niacin and niacinamide are as follows: a) Niacin is a white crystalline solid. b) While niacin is sparingly soluble in water, etha
Describe the factors which decide the broad area of Scientific activity
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