12. (a) State a characteristic that is common to all cervical...

12. (a) State a characteristic that is common to all cervical vertebrae

(b) Name two tissues in plants that provide mechanical support ( 2 marks)

13. (a) Name the three types of muscles found in mammals and give an example 

of where each on of them is found

(b) State the difference between ball and socket and hinge joint ( 1 mark)

14. State three functions of an insects exoskeleton (3 marks)

15. State the function of the following fins of a fish

(a) Dorsal fin ( 1 mark)

(b) Pectoral and pelvic fins ( 1 mark)

(c) Caudal fin ( 1 mark)