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Biology IX | Improvement in Food Resources | Part 1
Improvement in Food Resources Part 1 Crops Seasons Various crops require different climatic conditions, temperature and photoperiod, for their growth and completing their life cycle. Cropping activities go on all the year round in India, provided after is available for the crops. In northern India, there are following two distinct season crops : 1. Kharif…
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Biology IX | CELL- Structural organisation
CELL- Structural organisation A single cell may constitute a whole organisms as in Amoeba, Chlamydomnas, Paramecium and bacteria these organisms are called unicellular organisms. Many cells group together in a single body and perform different functions are called Multi cellular organism like fungi plants and animals. Cells vary in number, shape and size. In…