21. An animal with a body that is divided into roughly equivalent halves along a center line is said to be ___________.
a) Asymmetrical
b) Radially symmetrical
c) Bilaterally symmetrical
d) Spherical
Answer: c) Bilaterally symmetrical
22. Which of the following is an example of a cartilaginous fish?
a) Salmon
b) Tuna
c) Shark
d) Clownfish
Answer: c) Shark
23. The dominant life stage in the life cycle of a butterfly is the ___________.
a) Larva
b) Pupa
c) Adult
d) Egg
Answer: a) Larva
24. How do amphibians breathe?
a) Through lungs
b) Through gills
c) Through spiracles
d) Through their skin
Answer: d) Through their skin
25. The process in which an animal undergoes a series of changes in form and function as it grows is called __________.
a) Metamorphosis
b) Regeneration
c) Development
d) Reproduction
Answer: a) Metamorphosis
