23. Why bats are considered mammals?
A because their babies are bom alive and they have mammary glands
B. because they can fly and have wings
C because their bodies have slimy skin
D. because they lay eggs with shells
24. To which group can we include the dolphins?
A chicken, parrot, duck
B. dog, cat, mouse, goat
C. snake, crocodile, turtle
D. frog, iguana, salamander
25. Study some physical characteristics of the three animals below?
1
2
3
Characteristics of the Animal
Animal Body
Covering
With Wings
Fur
None
Fur
None
Fur
None
Feet
Hooves
Paws with claws
Fingers with claws
A. birds
B. reptiles
C. mammals
D. amphibians
26. Why is the jellyfish called an invertebrate?
A. It has sting.
B. It has a backbone
C. It has a skeleton.
D. It has no backbone.
27. The parasitic worm that lives in our intestines is the
A. leech
B. caterpillar
C. hookworm
D. earthworm
28. Which of the following animals does not belong to the group?
A. crabs
B. lobster
C. starfish
D. scorpions
29. Which of the following is not an echinoderm?
A seahorse
B. star fish
C. sea urchin
D. sea cucumber​