Grade 4 science quiz on basic needs and life cycles with answers

📚 Quick Study Guide

• 💧 Basic Needs: Living things need air, water, food, and shelter to survive.
• 🍎 Food: Plants make their own food through photosynthesis. Animals get food by eating plants or other animals.
• 🏠 Shelter: Shelter protects living things from weather and predators.
• 🔄 Life Cycle: The stages a living thing goes through during its life (e.g., seed to plant, egg to chicken).
• 🐣 Metamorphosis: Some animals change dramatically during their life cycle (e.g., caterpillar to butterfly).
• ☀️ Photosynthesis: The process where plants use sunlight, water, and carbon dioxide to create their own food ($6CO_2 + 6H_2O \rightarrow C_6H_{12}O_6 + 6O_2$).

🧪 Practice Quiz

1. Which of the following is NOT a basic need of all living things?
   1. A. Air
   2. B. Water
   3. C. Sunlight
   4. D. Food
2. What do plants need to make their own food?
   1. A. Soil, rocks, and air
   2. B. Sunlight, water, and carbon dioxide
   3. C. Water, sugar, and oxygen
   4. D. Air, water, and nitrogen
3. Which of these animals goes through metamorphosis?
   1. A. Dog
   2. B. Cat
   3. C. Butterfly
   4. D. Human
4. What does shelter provide for living things?
   1. A. Entertainment and toys
   2. B. Protection from weather and predators
   3. C. A place to store food
   4. D. A place to find friends
5. Which stage is part of the life cycle of a chicken?
   1. A. Seed
   2. B. Egg
   3. C. Caterpillar
   4. D. Sprout
6. What is the process called when plants make their own food?
   1. A. Respiration
   2. B. Digestion
   3. C. Photosynthesis
   4. D. Transpiration
7. Why do animals need food?
   1. A. To build shelter
   2. B. To grow and have energy
   3. C. To find water
   4. D. To breathe air