Question

Fill in the blanks:

1. ___________, _____________ and _____________ form our skeleton.



2. The ____________ in earthworm helps to get a good grip on the ground.





3. Cockroaches have _________ pairs of legs and _________ pairs of wings.



4. Small bones that constitute the backbone are called________________.





5. X-ray shows the shapes of _____________ in our body.



6. Foot of snails is made up of ________________ only.





7. _____________ and ________________ are the body parts that can be rotated completely,

as they have ________________________ joint.



8. Cartilage is found in ________________ and ___________________.



9. _________________________ is the part of the body we sit on.





10. _______________________ joint allows movement in all direction and _____________

Joint allows only back and forth movement.



11. Ribs join _____________ and ___________________ together to form ribcage.



12. An organism with outer skeleton is _________________.





13. The bones are moved by alternate _________________ and of __________________ of

two sets of muscles.



14. Snails move with the help of muscular ____________________________________.



15. The body and legs of cockroaches have hard coverings forming on outer ______________.​

Answer 1

Answer:

1

Explanation:

Skull, Vertibral column and rib cage

Answer 2

1. Skull, Rib Cage and Vertebral Column form our skeleton.
2. The bristles in earthworm helps to get a good grip on the ground.
3. Cockroaches have three pairs of legs and two pairs of wings.
4. Small bones that constitute the backbone are called vertebrae.
5. X-ray shows the shapes of bones in our body.
6. Foot of snails is made up of sclerites only.
7. Shoulder and Hip are the body parts that can be rotated completely,  as they have Ball and socket Joint.
8. Cartilage is found in ear and nose.
9. Buttock is the part of the body we sit on.
10. Ball and Socket joint allows movement in all direction and Saddle Joint allows only back and forth movement.
11. Ribs join sternum and cartilage together to form ribcage.
12. An organism with outer skeleton is Snail.
13. The bones are moved by alternate contraction and of relaxation of two sets of muscles.
14. Snails move with the help of muscular foot.
15. The body and legs of cockroaches have hard coverings forming on outer layer.​