Animals and Human Body Basics
Animal life and body systems
How animals survive
Animals are living things that get energy by eating other organisms. They need oxygen, water, food, and a safe environment. Different animals have different body structures that help them survive.
Human body systems
The human body has many systems that work together. The digestive system breaks down food, the respiratory system brings in oxygen, the circulatory system moves blood, and the nervous system helps control actions and senses.
Basic body systems
Which body system brings oxygen into the body?
The respiratory system is responsible for breathing and gas exchange.
Correct answer: Respiratory system
Animal needs vs. plant needs
Animals
- Eat food for energy
- Need oxygen
- Often move from place to place
Plants
- Make food with photosynthesis
- Need light, water, and carbon dioxide
- Usually stay rooted in one place
What does the digestive system do?
Digestion turns food into smaller substances the body can use.
Correct answer: Breaks down food
Name one human body system.
Any correct body system is acceptable.
Correct answer: Digestive, respiratory, circulatory, or nervous system.
Why do animals need food?
Food provides energy and building materials.
Correct answer: To get energy and materials for growth and repair.
Health note
Good science does not replace medical advice. If you have health concerns, ask a qualified professional.