Question

Why is nutrition a necessity for an organism?
A) It provides energy for the various metabolic processes in the body
B) It is essential for the growth of new cells and repair or replacement
C) It is needed to develop resistance against various diseases
D) All of the above

Answer 1

In order to generate digestible nutrients from undigested plant cellulose, many herbivores depend on bacterial fermentation, while obligated carnivores must consume animal meat to acquire such vitamins or minerals that their bodies will not otherwise synthesize.

Complete step by step answer:
First we should know about nutrition to answer this question. Nutrition refers to the science in which nutrients and other materials in food are viewed in regard to the organism's maintenance, development, reproduction, health and disease. Ingestion, digestion, biosynthesis, assimilation, excretion and catabolism are included here. The diet of a person, which is primarily dictated by food supply and palatability, is what it consumes.
Now, let us find the solution from the options-
For the body, nutrition is a must. The method of acquiring and using food for life is diet. For the following purposes, it is appropriate—
- It contributes energy to the different biochemical processes in the body.
- The development of new cells and the repair or replacement of worn out cells are important.
- The production of resistance to different diseases is important.
- It provides a substrate for the creation of energy that is used for survival of various life processes.

Thus, the correct answer is option (D) All of the above.

Note:
Plant nutrition, largely because of the difference between various crops and also between various organisms or individuals of a given clone, is a difficult topic to fully comprehend. Elements found at low levels can cause signs of deficiency, and exposure can occur at levels which are too high.