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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
Reflexes: It is of interest to know, that all sensory information does not have to go to the - brain before we can react to a stimulus. Our responses to certain stimuli
Temperature variations in glacial regions In glacial regions of the world or during forest fires the rocks are exposed to extreme temperatures. Since the conduction of heat is
Explosives : These include the commercial explosives, preparations and substances used as blasting agents, ammunition, fireworks etc. Some examples are, gun powder, chlorate mixtu
A hair hygrometer This device will enable you to read the relative humidity directly without the use of tables. Procure a few human hairs about 30 cm long. Free them from gr
A 57 year olf female presented to her GP with a history of fatigue, weight loss and incresingly severe back pain. on examination she appeared pale with no signs of hepatomegaly or
Explain the Obstetric or Maternal Morbidity Obstetric/maternal morbidity, which covers morbidity in a woman who is, or has been, pregnant from any cause related to or aggravate
what chemistry
Explain Cardiac Compression - Decreased Cardiac Output Rapid accumulation of fluid in the pericardial sac decreases ventricular distensibility leading to a decrease in cardiac
How to neutralize the ethyl alcohol used for determined alcoholic acidity.
What are the heat sources in the earth?
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