Food (Classes VI-VIII) • Topic 2 of 4

Sources of Food: Plants and Animals

All our food traces back to two sources: plants and animals. From plants we get cereals and grains, pulses, fruits, vegetables, oils and sugar; we eat different plant parts - roots (carrot, radish), stems (potato is a stem, sugarcane), leaves (spinach, cabbage), flowers (cauliflower, broccoli), fruits (mango, tomato) and seeds (rice, wheat, gram). From animals we get milk, eggs, meat, fish and honey (honey, made by bees from flower nectar, is a favourite tricky example). Based on what they eat, organisms are herbivores (plants only), carnivores (other animals) and omnivores (both) - humans are omnivores. CTET often weaves in the idea that plants are the original producers, so even animal foods ultimately depend on plants. The pedagogy and misconception load here is heavy. Children routinely think potatoes are roots (they are underground stems), that all underground parts are roots, that vegetables and fruits are completely separate things (a tomato and brinjal are fruits botanically), or that milk and honey are 'made in a factory'. A strong CTET answer shows a teacher using a real basket of foods, asking children to trace each item back to its plant part or animal, rather than reading a list off the board - learning by observation and classification.

✅ Solved examples

1. A Class 6 worksheet asks children to tick "root vegetables" and most tick potato. Why is this an error, and how should a teacher address it?
Potato is a modified underground stem, not a root (true roots here are carrot and radish). The misconception is that anything growing underground is a root. The teacher should show actual specimens, point out the "eyes" (buds) on a potato that sprout new plants - a stem feature - so children correct the idea by observing, not memorising.
2. Honey is often listed under animal sources of food. Explain why, given that bees collect it from flowers.
Honey is classified as an animal source because it is produced by honeybees (animals), even though the bees gather nectar from flowers. The processing and making of honey is done by the bee, so the food source is the animal.
3. An organism that eats only plants is called what, and what is a human classed as?
An animal that eats only plants is a herbivore. Humans, who eat both plants and animals, are omnivores.
4. Name the plant part we eat in each: spinach, cauliflower, sugarcane, gram (chana).
Spinach - leaf; cauliflower - flower; sugarcane - stem; gram (chana) - seed.

✏️ Practice — try these, take hints as needed

1. Give two foods we obtain from animals and the animal each comes from.
Think milk, eggs, honey, fish.
Match each food to its animal.
Examples: milk - from cow/buffalo/goat; eggs - from hen; honey - from honeybee; fish/meat - from fish/animals (any two correct pairs).
2. A student says a carrot and a potato are both roots because both grow under the soil. Is this correct?
One is a true root, one is a stem.
Look for buds/eyes.
No. Carrot is a root, but potato is a modified underground stem (it has eyes/buds). Growing underground does not make a part a root.
3. Why can we say plants are the ultimate source of all our food, even meat and milk?
Animals must eat to live.
Trace the food chain back.
Because animals that give us food (cows, hens, fish) themselves depend on plants for food; plants are the producers, so all food ultimately traces back to plants.
4. Classify these by feeding habit: cow, lion, crow.
What does each eat?
Plant-eater, flesh-eater, or both.
Cow - herbivore; lion - carnivore; crow - omnivore.

📝 Topic test — 8 questions

Auto-graded with full solutions; saved to your dashboard. Use the calculator and formula sheet (top-right) any time.

Loading questions…
← Components of Food and Nutrients Balanced Diet and Deficiency Diseases →