AS2 10.00

Dean is concerned his aquarium air pump is not working properly. What does he most likely see that suggests this concern?

• Decaying feed materials on the floor of the aquarium

• Fish swimming close to the bottom of the aquarium

• Plants rooted in the gravel at the floor of the aquarium

• Reduced bubbles rising from the air stone at the floor of the aquarium

What is a major difference between amphibians and reptiles?

• Reptiles are cold-blooded; amphibians are warm-blooded.

• Reptiles have scales; amphibians do not have scales.

• Reptiles lay eggs; amphibians do not lay eggs.

• Reptiles live in water; amphibians live on land.

What is a popular freshwater aquarium fish that gives birth to up to 50 live fry each time?

• Betta

• Goldfish

• Guppy

• Koi

Which is true of betta fish?

• Live in saltwater aquariums

• Need two males per aquarium

• Often kept alone in an aquarium

• Prefer cool-water aquariums

Mollies are freshwater fish that are known for their:

• black color and large fins.

• orange color and white bands.

• red color and long tail.

• silver color and black stripes.

Which is true of clown fish?

• Live in cold-water aquariums

• Live in freshwater aquariums

• Orange fish with white bands, edged in black, encircling its body

• Silver fish with three black vertical stripes on each side

Species aquariums have only:

• freshwater fish living in them.

• one kind of fish living in them.

• saltwater fish living in them.

• tropical fish living in them.

Susan avoids wasting fish feed by feeding her fish only the amount they can eat in four minutes. To make certain her fish get enough to eat, she feeds them:

• once a day.

• three times a day.

• once a week.

• three times a week.

Which is true of saltwater fish, but not true of freshwater fish?

• Saltwater fish do not have scales, but freshwater fish do have scales.

• Saltwater fish need to drink water, but freshwater fish do not need to drink water.

• Saltwater fish are not colorful, but freshwater fish are very colorful.

• Saltwater fish have dorsal fins, but freshwater fish do not have dorsal

  fins.

Which is true of angelfish?

• Hardy fish for cool-water ponds

• Hardy saltwater or freshwater fish

• Tender fish suited to freshwater

• Tender fish suited to saltwater