Quiz on Structural Organisation in Animals

7. Frogs are beneficial to us because
(a) they protect crops.
(b) they links food web
(c) they are food to man
(d) all of the above

8. Which membrane protects the eyes of frog in water?
(a) Tympanum
(b) Skin
(c) Sebaceous
(d) Nictitating

9. Which of the following helps in locomotion of earthworms?
(a) Clitellum
(b) Setae
(c) Intersegmental grooves
(d) Nephridiophores