Question

Food chain starts with

• A. Photosynthesis
• B. Respiration
• C. Decomposition
• D. Nitrogen Fixation

Answer 1

The correct option is A

Photosynthesis

Correct answer

Option A- Photosynthesis

1. Plants acquire their energy from the sun, which is then used by them to produce food through a process known as photosynthesis.
2. Due to this, plants are referred to as producers.
3. They prepare their own food and do not rely on other creatures for nutrition.
4. As a result, they are classified as members of the first trophic level of the food chain and the food chain starts with photosynthesis.

Incorrect options

1. option B - Plants use the sugars created during photosynthesis, along with oxygen, to produce energy for growth and respiration, hence, photosynthesis needs to occur first in order for plants to respire.
2. option C - When a plant, animal, or insect dies, it is broken down into tiny particles that form part of the soil. This is referred to as decomposition. So, it always occurs at the last stage.
3. option D - The purpose of nitrogen-fixing bacteria is to provide plants with a fertilizer that they cannot get from the air.

Hence the correct answer is A- The food chain starts with Photosynthesis