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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
what do you mean by "super class" species "pisces"?
Floating a needle on water Thoroughly dry a steel needle. Place it on the tines of a dinner fork and gently smash the surface of the water in a dish with the fork. If you are c
OBELIA IS CONSIDERED TO BE OF SPECIAL INTEREST IN ZOOLOGY AND AS AN ANIMAL SHOWING AN INTERMEDIATE GRADE OF ORGANISATION
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
Observing changes of position of the earth with respect to the sun Mark a line on the floor or the wall where the sun shines in your room. Note the exact month, day and hour. A
feeding modes of insect,reptiles,amphipians,bird,fish and mammals
How did the Earth form and become spherical? The Earth's Shape : About five billion years ago the solar system was forming from gases and dust floating in space. Gravity, th
1. A cyclist ascends a hill of height 120 meters. The mass of cyclist plus bicycle is 100 kilograms. His efficiency is 25%. How many Calories does he burn? 2. A hiker in the Swi
Technology in industry: One aspect of technology is that the latest scientific methods are used in prduction. This, in turn, depends on the availability of the-right type of s
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