Food Chain
A food chain is a simple straight sequence that shows how food and energy pass from one organism to another.
Practice This ConceptMain explanation
Teacher explanation
In a food chain, energy starts from the Sun, reaches producers like green plants, and then moves to consumers such as herbivores and carnivores. The chain is linear, so each step depends on the previous one. The direction of the arrow shows the flow of food energy from the eaten organism to the eater.
Example
Grass is eaten by grasshopper, grasshopper is eaten by frog, frog is eaten by snake, and snake is eaten by eagle.
Simple analogy
Arrow goes from food to eater, so the chain always moves forward in feeding order.
Common confusion
Students often reverse the arrows. They think the arrow points to the food, but it actually points toward the organism that eats it.
Exam tip
When writing a food chain, always start with the producer and keep the order of feeding clear.
Study the food chain diagram carefully
Use the labelled diagram to keep food chain clear in short answers and revision.
What this diagram makes clear
This diagram keeps the labels and direction of food chain in the right order.
Where this helps in exams
Use this for labelled diagram work and short exam answers on food chain.
Revision cue
Revise food chain through the labels before writing the answer.
Answer writing and exam use
1-mark use
Write the exact meaning of food chain in one clean line.
2-mark use
Define food chain and add one example or condition.
3-mark use
Explain food chain, show the method or example, and mention the common mistake.
Practice this concept with focused MCQs
Open the concept quiz intro first, review the test details, and then start a focused MCQ set from this concept only. Instant score and answer review are live now.
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