Basic unit of life is cell
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Basic unit of Life

 1. Basic unit of life -->The cell in all living organisms. 2. Unicellular organisms are capable of  o (i) independent existence and o (ii) performing the essential functions of life.…
Excretion
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Excretion

Excretion is a process in which metabolic waste is eliminated from an organism. In vertebrates this is primarily carried out by the lungs, kidneys, and skin.  1. Ammonia, Urea and…
Digestion and absorption
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 DIGESTION & ABSORPTION

 DIGESTION & ABSORPTION 1. Food --> Carbohydrates, Proteins and Fats. (Have Calorific value) • Vitamins and Minerals (Non calorific value but important) • Food is source of energy -->for growth…
EVOLUTION
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EVOLUTION

EVOLUTION 1.EVOLUTIONARY BIOLOGY is the study of history of life forms on earth. 2.The universe is almost 20 billion years old. 3.The BIG BANG THEORY attempts to explain to us the origin of…