Grade 5 science worksheet designed to test students' understanding of human body systems and their corresponding organs.

Let's solve the worksheet step by step and explain each answer.

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1. Match each human body system with its corresponding organs.

We are given six body systems on the left and six organ lists (a–f) on the right. We need to match them correctly.

#### Let’s analyze each:

- The Circulatory System
→ Responsible for transporting blood, nutrients, oxygen, and waste throughout the body.
→ Key organs: Heart, blood, blood vessels
✔ Match: d

- The Respiratory System
→ Involved in breathing and gas exchange (oxygen in, carbon dioxide out).
→ Key organs: Mouth, pharynx, lungs, bronchi
✔ Match: f

- The Digestive System
→ Breaks down food into nutrients that the body can use.
→ Organs include: Mouth, salivary glands, esophagus, stomach, liver, intestines
✔ Match: b

- The Skeletal System
→ Provides structure and support; protects internal organs.
→ Made up of bones in the body
✔ Match: e

- The Muscular System
→ Allows movement and helps maintain posture.
→ Composed of muscles in the body
✔ Match: c

- The Nervous System
→ Controls and coordinates body activities.
→ Includes: Brain, spinal cord, nerves
✔ Match: a

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✔ Final Answers for Question 1:
- The Circulatory System → d
- The Respiratory System → f
- The Digestive System → b
- The Skeletal System → e
- The Muscular System → c
- The Nervous System → a

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2. Read the question and state the human body system that does the job indicated.

Now let’s identify which system performs each function.

- -helps humans turn their food into energy?
→ This is the process of digestion and absorption of nutrients.
✔ Digestive System

- -helps humans breath?
→ Breathing involves inhaling oxygen and exhaling carbon dioxide.
✔ Respiratory System

- -controls other body systems?
→ The nervous system sends signals to coordinate all body functions.
✔ Nervous System

- -provides structure for the body?
→ The skeleton gives shape and support to the body.
✔ Skeletal System

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✔ Final Answers for Question 2:
- -helps humans turn their food into energy? → Digestive System
- -helps humans breath? → Respiratory System
- -controls other body systems? → Nervous System
- -provides structure for the body? → Skeletal System

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✔ Final Answer Summary:

#### Question 1:
- The Circulatory System → d
- The Respiratory System → f
- The Digestive System → b
- The Skeletal System → e
- The Muscular System → c
- The Nervous System → a

#### Question 2:
- Helps turn food into energy → Digestive System
- Helps humans breathe → Respiratory System
- Controls other body systems → Nervous System
- Provides structure → Skeletal System

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This worksheet helps students understand how different body systems work and what organs are involved. Each system has a unique role, and they often work together to keep the body functioning properly.