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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 the Categories of Nerves System The nerves are divided into two systems: sympathetic and parasympathetic. They constitute the autonomic system (auto: independent from t
1. The output of a single neuron is given by y = f(w 1 x 1 +w 2 x 2 +w 0 x 0 ), where x 1 and x 2 are inputs, x 0 has the constant value 1, w 0 , w 1 and w 2 are parameters
Agriculture on a large scale: Crops had to be planted and harvested in the right season. Floods were a recurrent phenomenon in the river valleys, for which it was essent
Which describes granite and basalt
Define The Large Intestine The large intestine or colon is about five feet long. It begins at the caecum and terminates at the rectum and anal canal. It is divided into a numbe
Explain Age Related Changes - Ageing Age related changes are mainly observed at a cellular level. The connective tissues throughout body show an increase in stiffness because o
The Sun is the most important star from our point of view. It is the only star close enough to be studied in considerable detail. The grandeur of the Sun is partly because of
An experiment with a loop of thread Rinse a dinner plate methodically and then fill it with water. Make a loop with thread, open it a little and float it on the water. Touch th
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Explain Differentiated cells in an Organism These are the post-mitotic cells, which have undergone specialization and/or exhibit the division of labor. Therefore, these cells a
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