Ecosystems quiz Grade 4 with answers.

📚 Quick Study Guide

• 🌱 What is an Ecosystem? An ecosystem is a community of living things (plants, animals, and microorganisms) that interact with each other and their physical environment (soil, water, air).
• ☀️ Living Things (Biotic Factors): These include plants, animals, fungi, and bacteria. Each has a role to play!
• 💧 Non-Living Things (Abiotic Factors): These are things like sunlight, water, soil, and air. Living things need these to survive.
• 🔗 Food Chains: A food chain shows how energy passes from one living thing to another. Example: Grass $\rightarrow$ Grasshopper $\rightarrow$ Frog $\rightarrow$ Snake.
• 🏠 Habitats: A habitat is the natural home or environment of an animal, plant, or other organism.
• ⚖️ Balance in Ecosystems: Ecosystems need to be balanced. If one part changes too much, it can affect everything else.

🧪 Practice Quiz

1. What is an ecosystem?
   1. A collection of only plants.
   2. A community of living things interacting with each other and their environment.
   3. A group of only animals.
   4. A single living thing.
2. Which of the following is an example of a biotic factor in an ecosystem?
   1. Sunlight
   2. Water
   3. A tree
   4. Soil
3. Which of the following is an example of an abiotic factor in an ecosystem?
   1. A bird
   2. A fish
   3. A rock
   4. A flower
4. What does a food chain show?
   1. How animals build their homes.
   2. How plants grow.
   3. How energy passes from one living thing to another.
   4. How water flows through an ecosystem.
5. What is a habitat?
   1. A type of food.
   2. The natural home of an animal or plant.
   3. A type of weather.
   4. A type of soil.
6. What might happen if one part of an ecosystem changes too much?
   1. Nothing.
   2. It can affect everything else in the ecosystem.
   3. The ecosystem will become stronger.
   4. Only the plants will be affected.
7. Which of the following is a balanced ecosystem?
   1. A forest with only trees and no animals.
   2. A pond with too many fish and not enough plants.
   3. A desert with very little water and few plants and animals adapted to survive there.
   4. A field with only one type of grass.