Nutrition, respiration, circulation, excretion are examples of essential life processes. In unicellular organisms, all these processes are carried out by that single cell. In multicellular organisms, well-developed systems are present to carry out the processes. These processes help us classify that whether the organism is living or not.
1. Nutrition is important because
a. It provides nourishment
b. It keeps us alive
c. Both A and B
d. It provides genetic information
2. Respiration is
a. Catabolic process that uses carbon dioxide, produces oxygen and converts released energy into ATP
b. Anabolic process that uses oxygen and carbondioxide to form ATP
c. Anabolic process that uses oxygen, produces carbon dioxide and converts released energy into ATP
d. Catabolic process that uses oxygen, produces carbon dioxide and converts released energy into ATP
3. Transportation is helpful to plants in
a. Cooling
b. Loss of excess nutrients
c. Upward conduction/ascent of sap
d. Loss of excess water
4. Excretion is removal of
a. Carbon dioxide
b. Harmful and useless ingredients
c. Extra water
d. Metabolic waste products
5. In humans, life processes are controlled and regulated by
a. Reproductive and endocrine systems
b. Respiratory and nervous systems
c. Endocrine and digestive systems
d. Nervous and endocrine systems
