General Science Question Answers Chapter 8 Class 6 Maharashtra Board

Question Answers For All Chapters – General Science Class 6

Our Skeletal System and the Skin

Exercise

1. Fill in the blanks with the proper word.
(a) The place where two or more bones are connected is called a joint.
(b) Cells of the epidermis contain a pigment called melanin.
(c) Epidermis and dermis are the two layers of human skin.
(d) The human skeletal system is divided into two parts.

2. Match the pairs.

3. Right or Wrong? If wrong, write the correct sentence.
Answer –
(a) Bones are soft.  (Wrong)
➡ Correct sentence: Bones are hard.
(b) The human skeleton protects the internal organs.  (Right)

4. Put a 🗹 mark at the proper places.
(a) The system which gives a definite shape to our body.
Answer – Skeletal system

(b) The ……. joint is seen in fingers and toes.
Answer – Hinge joint

5. Answer the following questions in your words.
(a) What are the functions of your skin?
Answer –

• The skin protects the inner parts of the body.
• It helps keep moisture inside the body.
• It helps in making Vitamin D.
• The skin releases sweat to control body temperature.
• It protects us from heat and cold.
• It helps us to feel touch, pain, heat, and cold.

(b) What should you do to keep your bones strong and healthy?
Answer – Eat calcium-rich food like milk and leafy vegetables.
Exercise regularly.
Get enough sunlight for Vitamin D.
Maintain good posture while sitting and standing.
Avoid accidents and injuries to bones.

(c) What are the functions of the human skeletal system?
Answer – It gives shape and support to the body.
It protects important organs like the brain, heart, and lungs.
It helps in movement along with muscles.
It stores minerals like calcium.

(d) What are the various reasons due to which our bones might break?
Answer – Falling while running or playing.
Accidents like road crashes.
Strong impact or heavy object falling on the bone.
Weak bones due to lack of calcium or old age.

(e) What are the different types of bones? How many types are there?
Answer – There are four types of bones:

Flat bones (Example: Skull, ribs)
Small bones (Example: Fingers, toes)
Irregular bones (Example: Spine)
Long bones (Example: Arms, legs)

6. What will happen if -?
(a) There are no joints in our body.
Answer – Our body will become stiff, and we won’t be able to move.
(b) There is no melanin pigment in our skin.
Answer – Our skin will not be protected from the sun’s ultraviolet rays.
It may cause sunburn and skin diseases.
(c) Instead of 33 vertebrae in our body, we had one single and straight bone.
Answer – We would not be able to bend or move our back.
Our body will become stiff, and we will face difficulties in walking or sitting.