1. Skeleton of human body is made up of

2. Human skeleton comprises

3. Fixed joints are found in

4. Knee joints are

5. Fish swims by

6. Which one of the following is the characteristics of birds?

7. In cockroaches, the body parts helping in movement are

8. Muscular foot is a locomotary organ in

9. The organ that protects the main nerve cord is

10. The number of cervical vertebrae in man is