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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
Packaging and storage of oil Rancidity can cause the oil to deteriorate and develop off-flavors during storage. Using clean, dry containers, which exclude light and heat, and p
a. Which type of ripple marks would you expect to see on the bed of a river? Why? b. Which type would you expect to find on the floor of a standing body of water? Why? c.
fertilization of an earthworm
Astronomy and Physical Sciences: Astronomy was used not only for working out the calendar, the dates of the eclipses and for the determination of time but also for casting h
Ventures in Space: Sometimes the atmospheric conditions distort the light or radiowaves coming in from space. For instance, there may be a storm disturbing the radiowaves. O
Safety spectacles : Safety spectacles need to be used where there is the slightest risk of splashes of chemicals or fragments of dust, glass, etc. getting into the eyes.
A lamp chimney lift pump Use a straight-sided lamp chimney as a pump cylinder. Fit a two-hole stopper into the chimney for a piston. If the stopper is a little small wrap some
1.) Imagine that you are a particle inside an ice cube. You were placed into a glass of lemonade to cool it down. The lemonade has now been drunk and you have been left in the glas
Water pressure changes with depth Use the funnel and manometer which you made in the last experiment. Fill a tall glass jar or pail with water. Calculate the pressure just belo
what is the scientific classification of a protozoan
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