A. Choose the correct answer:

1. Which of the following protects the heart and the lungs?
a. Ribcage b. Lungs c. intestine   d. none of these
2. Which is the longest bone of our body?
a. Backbone b. Thighbone  c. Spine     d. none of these
3. What kind of joints do our back bone and wrist have?
a. Hinge joint b. Pivot joint c. Gliding joint d. none of these
4 Which of the following helps
a Kidneys b. Lungs c. Liver d. none of these
5. Which of the following carries urine from urinary bladder? 
a. Ureters b. Nerves c. Stomach d. none of these

B. Fill in the blanks:
1. The_____ ______provdes support to our body.
2. The ____ joint allows movement only in one direction
3. The thighbone is also called the____
4. ___________ form the link between vein and arteries.
5. The liver and the pancreas help in the process of____
 

Dear student,
A. Choose the correct answer
1. Option (a) is correct i.e. ribcage, as it is made up of a hard bony substance.
2. Option (b) is correct i.e. thighbone and it is known as femur 
3. Option (d) is correct i.e none of these as joints in wrist bones are gliding joints while in back bone there are pivot joints.
4. Your question seems to be incomplete, as there is no clear indication about the organ. So kindly repost this question.
5. Option (d) is correct i.e. none of these as urine is carried by urethra from urinary bladder.

B. Fill in the blanks
1. The back bone provides support to our body.
2. The hinge joints allows movement only in one direction.
3. The thigh bone is also called the femur.
4. Capillaries form the link between veins and arteries.
5. The liver and the pancreas help in the process of digestion.
 
Hope this information will clear your doubts about the topic.

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