Energy cycle food production from "summary" of 9th Grade Biology Notes PDF (Class 9 Textbook) by Arshad Iqbal

The energy cycle in food production is the process in which plants capture sunlight to create energy and complete the photosynthesis process, converting it into food for consumption by other organisms and animals.

This constant recycling of energy, carbon dioxide, water, and minerals helps sustain all living things on the planet, creating a continuous flow of energy from one organism to another.

It is an incredibly complex system that involves the transfer of energy, water and carbon dioxide from one organism to another before eventually cycling back around in a closed loop cycle.

Plants use light energy from the sun to synthesize their own food through the process of photosynthesis, during which time they absorb minerals and nutrients from the soil to produce glucose - a type of sugar used for food.

Animals then consume the plants and obtain glucose and other organic molecules, releasing enzymes which break them down into smaller molecules that can be absorbed into the animal body.

As the animal then metabolizes these small molecules, heat and energy are released which the organism uses to move, grow, and survive.

After going through this process, the plant produces oxygen and releases it into the atmosphere as a waste product. This oxygen accumulates in the atmosphere so that it can be taken up by other organisms in the food chain.

Nutrients and minerals that were originally within the plant end up being circulated back into the soil once the animal's C02 and nitrogenous wastes are excreted.

This energy cycle continues to exist whether humans are involved or not, and is essential for the Earth's natural balance.