general educational development high school

The importance of maintaining the ecological balance and conservation of the resources has been increasingly becoming clear in the last two decades. It has now become necessary for all countries in the world to recognise this fact and plan what is known as 'sustainable development'. The ..

Reproduction and Development..

Reproduction and Development..

Reproduction and Development..

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Stamen forms the male reproductive unit and is made up of anther and the filament. The anther is generally bilobed with chamber containing several pollen grains. Pollen grains are produced in the anther . A very young anther comprises a mass of undifferentiated thin - walled cells bounded..

Apart from hearing impairment, the first effects are anxiety and stress reaction and in extreme cases fright . The physiological manifestations are : Increase in the rate of heart-beat, increased cholesterol and blood pressure. Constriction of blood vessels Digestive spasms and stomach ..

Molecular hydrides are soft. They are generally, volatile in nature and have low melting and boiling points. They have low electrical conductivity. The electronegativity difference between hydrogen and the atom bonded to it, determines the properties of covalent hydrides. When ..