Nutrition in Plants and Animals — Lesson
1) Hook — A Fun Real-Life Story
Imagine a cricket match where the star batsman, Virat Kohli, suddenly feels weak and tired during the innings. Why? Because he forgot to eat his nutritious meal before the game! Just like athletes need food to get energy, every living thing — plants and animals — need nutrition to live, grow, and perform their best.
But did you know plants and animals get their nutrition in very different ways? Let’s explore how!
2) Core Concepts — Nutrition in Plants and Animals
Nutrition is the process by which living organisms obtain food and use it to get energy and build their bodies.
Nutrition in Plants
Plants make their own food through a process called photosynthesis. They use sunlight, water, and carbon dioxide to produce glucose (a type of sugar) and oxygen.
Process of Photosynthesis:
- Leaves absorb sunlight using a green pigment called chlorophyll.
- Roots absorb water from the soil.
- Leaves take in carbon dioxide from the air.
- Using sunlight energy, plants convert water and carbon dioxide into glucose and oxygen.
| Raw Materials | Products |
|---|---|
| Water + Carbon Dioxide + Sunlight | Glucose (Food) + Oxygen |
Nutrition in Animals
Animals cannot make their own food. They depend on plants or other animals for nutrition. Animals can be:
- Herbivores: Eat only plants (e.g., cow, deer)
- Carnivores: Eat only other animals (e.g., tiger, eagle)
- Omnivores: Eat both plants and animals (e.g., humans, bears)
Animals digest the food they eat to get energy and nutrients for growth and repair.
| Type of Animal | Food Source | Example |
|---|---|---|
| Herbivore | Plants | Cow, Elephant |
| Carnivore | Other Animals | Lion, Hawk |
| Omnivore | Plants & Animals | Human, Bear |
3) Key Formula / Rule
6CO2 + 6H2O + sunlight energy → C6H12O6 + 6O2
(Carbon dioxide + Water + Sunlight → Glucose + Oxygen)
4) Did You Know?
India’s national tree, the Banyan tree, is famous for its aerial roots and can live for hundreds of years! It produces its own food through photosynthesis and provides shelter and food for many animals like squirrels, birds, and bats.
5) Exam Tips
- Remember the photosynthesis formula exactly — it is a common question in exams.
- Don’t confuse autotrophs and heterotrophs: Plants are autotrophs (make their own food), animals are heterotrophs (depend on others).
- Practice diagrams: Label parts of a leaf involved in photosynthesis and the digestive system of animals.
- Common mistake: Students often say plants eat soil — clarify that plants absorb minerals from soil but make food from sunlight!
- Board exam pattern: Expect short answer questions, fill-in-the-blanks, and diagram-based questions on nutrition.
Nutrition in Plants and Animals — Mcq
Nutrition in Plants and Animals — Mnemonic
Mnemonic 1: Photosynthesis Process (for Plants) 🌞🌿
"COWS Like Sugar, Please!"
- Carbon dioxide (CO2)
- Oxygen (O2) released
- Water (H2O)
- Sunlight energy
- Leaves (chlorophyll site)
- Sugar (glucose) made
- Photosynthesis happens
Imagine cows happily munching grass made by sugar from sunlight and water! 🐄🍃
Mnemonic 2: Types of Nutrition in Animals 🐘🍽️
"HCC - Hungry Carnivores Chew!"
- Heterotrophic (animals eat others)
- Carnivores (meat-eaters like lions 🦁)
- Chewers (herbivores like cows 🐄)
Think of a hungry lion and cow having a cricket match, but both need food to play well! 🏏
Mnemonic 3: Hindi Fun Phrase for Nutrition Types 🍎🥦🍖
"शाकाहारी, मांसाहारी, और सर्वाहारी - सब खाते हैं, मज़ा आता है!"
- शाकाहारी (Shakahari) - Plant eaters like rabbits 🐇
- मांसाहारी (Mansahari) - Meat eaters like tigers 🐅
- सर्वाहारी (Sarvahari) - Eat both plants and animals like humans 👨👩👧👦
Just like Bollywood heroes who can do everything — eat veggies, meat, and still dance! 💃🎬
Mission: Master This Topic!
Reinforce what you learned with fun activities
Ready to Battle? Test Your Knowledge!
Practice MCQs, build combos, climb the leaderboard!
Start Practice