Learning Task 1: Choose the correct answer. Write your answers on your answer sheet.

1. Birds are able to fly because .

a. they are able to control air currents,

b. they have colorful feathers.

c. they have light and hollow bones,

d. they have scales all over their bodies.

2. Which of the following is not considered a worm?

a. ascaris b. fluke c. planaria d. millipede

3. Which of the following animal is a not vertebrate?

a. frog b. birds c. reptiles d. insects

4. Which of the following animal is a vertebrate?

a. worms b. snakes c. snail d. jellyfish

5. Between 90%-95% of all animals on earth can be classified as

a. invertebrates b. vertebrates c. reptiles d. mammals​