Class 6 Science Body Movements Oxford Book Solution

The Class 6 science Body Movements oxford book explains how humans and animals move, the role of muscles and bones, and the different types of joints in the body. This page provides step-by-step solutions from the Oxford Science textbook, making it easy for students to understand concepts like skeletal structure, cartilage, and muscle action. With these solutions, learning about body movements becomes simple and enjoyable.

Class 6 science Body Movements oxford book Exercise

Let’s Remember

Q1. Name the part that protects the heart and lungs.
Answer: Rib cage

Q2. Which part protects the spinal cord?
Answer: Backbone (or vertebrae)

Q3. What type of joint does the shoulder have?
Answer: Ball-and-socket joint

I. Objective Type Questions

A. Fill in the blanks with suitable words

The body structure of an animal determines the kind of movement it exhibits.
An earthworm’s body is made up of several parts called segments.
A snail has tentacles that bear eyes at the tips.
A fish has fins and a flexible backbone.
Snakes move by crawling on their bellies.
The skull protects the brain from injury.
The ends of the bones are covered with cartilage.

B. True or False (T/F). Correct the false statements

The earthworm extends the rear part of the body, keeping the front part fixed to the ground.
F. Correction: The earthworm extends the front part of the body, keeping the rear part fixed.
The foot of a snail produces a slimy substance called the shell.
F. Correction: The foot of a snail produces a slimy substance called mucus.
A streamlined body is narrow at the head and tail and broader in the middle.
T
Upstroke and downstroke help a snake to crawl in a wave-like manner.
F. Correction: Upstroke and downstroke help a bird to fly. A snake moves in a wave-like manner.
The backbone of a human body is made up of 33 vertebrae.
T
A pivot joint allows bones to glide over each other.
F. Correction: A pivot joint allows bones to rotate in a circular or partial circular motion. A gliding joint allows bones to glide over each other.

C. Choose the correct option

Which of these helps to maintain the body shape of an earthworm?
Answer: Body fluid
Which of these helps to detect the slightest movement and warn a cockroach of danger?
Answer: Antennae
Which of these helps a fish to move up and down in water?
Answer: Fins
Which of these features help birds to fly?
Answer: Hollow bones
Which of these joints does the elbow have?
Answer: Freely movable joint (hinge joint)
Which of the following has a streamlined shape?
Answer: Fish
Which of these animals do not have limbs?
Answer: Snake
Which of these protects the heart and lungs?
Answer: Rib cage
Which of the following has movable joints?
Answer: Backbone
The ends of bones are covered with __________.
Answer: Cartilage

II. Very Short Answer Type Questions

A. Give two examples for the following

Animals with streamlined bodies: Fish, Birds
Animals that do not have limbs: Snakes, Earthworms
Parts of the human skeleton: Skull, Rib cage
Parts of the body with freely movable joints: Elbows, Knees, Shoulders
Parts of the body that have cartilage: Ears, Nose

III. Short Answer Type Questions

Q1. Differentiate between vertebrates and invertebrates.
Answer: Vertebrates are animals with a backbone, like humans, birds, and fish. Invertebrates are animals without a backbone, like earthworms and snails.

Q2. How does a streamlined body help a fish move in water?
Answer: A streamlined body is narrow at the head and tail and wider in the middle. This shape reduces water resistance, allowing the fish to swim quickly and efficiently.

Q3. Explain upstroke and downstroke movement in birds.
Answer: Upstroke is the upward movement of a bird’s wings, while downstroke is the downward movement. The powerful downstroke provides thrust to lift the bird into the air and propel it forward.

Q4. How does a snake move?
Answer: A snake moves in a wave-like, S-shaped motion using its muscles and the scales on its belly to push against the ground.

Q5. What is cartilage? How does it help the bones?
Answer: Cartilage is a soft, flexible tissue that covers the ends of bones. It acts as a cushion, preventing bones from rubbing against each other and allowing smooth, pain-free joint movement.

IV. Long Answer Type Questions | Class 6 science Body Movements oxford book

Q1. List the features that help a fish move in water.
Answer:

Streamlined body shape reduces resistance.
Strong tail and fin muscles help in propulsion and direction changes.
Swim bladder helps move up or down.
Gills allow breathing in water.

Q2. Describe the functions of the human skeleton.
Answer:

Support: It provides the framework that gives the body its shape and holds all the organs in place.
Protection: The skeleton protects vital internal organs. For example, the skull protects the brain, and the rib cage protects the heart and lungs.
Movement: The skeleton, working with muscles and joints, allows the body to move.
Blood cell production: The bone marrow inside certain bones produces red blood cells, white blood cells, and platelets.
Mineral storage: Bones store essential minerals like calcium and phosphorus, which the body can use when needed.

Q3. What are joints? Explain different kinds of movable joints with examples.
Answer: Joints are places where two or more bones meet. Types:

Freely movable joints allow wide motion:
- Ball-and-socket joint: movement in all directions (e.g., shoulder, hip).
- Pivot joint: rotation around one axis (e.g., neck).
- Hinge joint: movement in one direction (e.g., elbow, knee).
- Gliding joint: bones glide over each other (e.g., wrist, ankle).

Q4. How do muscles bring about movement? Explain with an example.
Answer: Muscles bring about movement by working in pairs, because a single muscle can only pull a bone, it cannot push it back. When one muscle of the pair contracts and becomes shorter, it pulls the bone in one direction, while the opposite muscle relaxes. To move the bone back, the first muscle relaxes and the opposite one contracts. This coordinated action makes smooth movement possible.

Example: In the human arm, the biceps and triceps muscles control the movement of the forearm. When the biceps contract and the triceps relax, the forearm is pulled upward and the arm bends. To straighten the arm again, the triceps contract while the biceps relax. This push-and-pull action of muscles is what helps in body movements.

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The Class 6 science Body Movements oxford book helps students clearly understand how bones, joints, and muscles work together in the human body. By using the Class 6 Science Body Movements Oxford Book Solution, learners can also explore how animals like earthworms, snails, fish, birds, and snakes move in different ways. Studying the Class 6 Science Body Movements Oxford Book Solution makes the concepts easier to grasp and improves exam preparation. Overall, the Class 6 Science Body Movements Oxford Book Solution is a valuable resource for building strong scientific knowledge.