CRITERIA TO DECIDE WHETHER AN ORGANISM IS ALIVE OR NOT?
The most important criteria to decide whether something is alive or not is movement. All the living things move without the help of any external help.
Some movements in our body are not visible like molecular movement. These molecular movements in cells and tissues are necessary for all life processes.
CHARACTERISTICS OF LIVING THINGS
1. Living things can move by themselves.
2. Living things need food, air and water.
3. Living things can grow.
4. Living things can respire.
5. Living things can excrete.
6. Living things can responds.
7. Living things can reproduce.
8. Living have cellular organisation.
MEANING OF LIFE PROCESSES
The basic functions performed by living organisms to maintain their life on this earth are called life processes.
The basic life processes are-
1. Nutrition
2. Respiration
3. Transportation
4. Excretion
5. Growth and movements
6.Controls and coordination.
7. Sensitivity
8. Reproduction
Answers the following question in comment box..
- What is the most common criteria to identify whether something is alive or not?
- Which of the following is not a life process? (a) respiration (b) Transportation (c) Nutrition (d) Swimming
- Which type of movements are necessary for all life processes?