What is living?
What is living?
⇒ The word living cannot be defined.
⇒ Living organism mostly uses solar energy.
⇒ There are certain characters by which living can be distinguished from non living.
1. Growth: Increase in the number of cell or mass is called growth.
2. Reproduction: Living organism produce young ones of their same kind.
3. Metabolism: Chemical reaction occurring inside a living cell.
4. Response to stimuli: Living have the ability to sense, the condition of their surrounding and respond to these stimuli.
⇒ When we touch leaves of “Touch me not” plant they close, these movement are called sesmonastic movement.
⇒ Life on earth is originated by chemosynthesis was proved in laboratory by the scientist. -Miller
⇒ J.B.S. Haldane suggested that life must have developed from simple inorganic molecule.
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