Question

........ Those are the only organisms that can prepare food for themselves by water, carbon dioxide, minerals.
A. Plants
B. Human
C. Both A and B
D. None of the above

Answer 1

Hint: The organisms that prepare their food themselves without the help of the other organisms that are known as autotrophs.
The organisms who take their food from other organisms, and depend on other organisms for food and other food materials are known as heterotrophs.

Complete answer: 1. The process in which water, carbon dioxide, and minerals are used for the purpose of food preparation is known as photosynthesis. The process of photosynthesis is done in the presence of sunlight.
2. In our ecosystem plants are the only organisms that prepare their food for themselves and do not depend on the other organisms for food and other requirements. Plants are the only autotrophs in our ecosystem
3. The process by which plants prepare their food is known as photosynthesis. Plants take water and minerals from the soil. The roots of the plant absorb the water and minerals from the soil which transport to the leaves by the xylem tissue.
4. Plants take carbon dioxide directly from the environment. The process of photosynthesis is done in the leaves as leaves of the plants have chlorophyll which is essential for the food preparation.
5. So plants are organisms that prepare their food by water, minerals, and carbon dioxide.

So the option A is correct.

Note: Sunlight is also a very important component in the process of photosynthesis. In the absence of sunlight, the process of photosynthesis will be stopped.
Humans depend on plants and other animals for food.