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THE LIVING WORLD 1. Systematic and detail description of life forms o Identification, nomenclature and classification. 2. ERNST MAYR ‘The Darwin of the20th century’; Pioneered the currently accepted definition of a biological species. 3. CHARACTERSTICS OF A LIVING ORGANISM GROWTH: TWIN CHARACTERISTICS •Increase in mass and increase in number A multicellular organism grows by cell division. In plants, the growtUnlimited & Localised In animals, the growth is Limited & Unlocalised Unicellular organisms grow by cell division. Growth of living organism is from inside. ...
THE LIVING WORLD 1. Systematic and detail description of life forms o Identification, nomenclature and classification. 2. ERNST MAYR ‘The Darwin of the20th century’; Pioneered the currently accepted definition of a biological species. 3. CHARACTERSTICS OF A LIVING ORGANISM GROWTH: TWIN CHARACTERISTICS •Increase in mass and increase in number A multicellular organism grows by cell division. In plants, the growtUnlimited & Localised In animals, the growth is Limited & Unlocalised Unicellular organisms grow by cell division. Growth of living organism is from inside. ...
IMMUNITY: • The ability of the host to fight the disease-causing organisms, • conferred by the immune system. .Immunity is of two types: • Innate immunity • Acquired immunity. Innate immunity • Non-specific type of defence, • Present at the time of birth. .Innate immunity is accomplished by providing different types of barriers to the entry of the foreign agents into our body. • Innate immunity consists of four types of barriers. These are — • Physical barriers: Ø Skin Ø Mucus coating of the epithelium lining • Physiological barriers: Ø Acid in the stomach, Ø saliv...
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