Fish Unit

Structures that help fish to catch particles in when filtering water through the gills are called

• operculums
• spiracles
• nostrils
• gill rakers

This organ allows fish to sense changes in water pressure. 

• Nare
• Lateral Line
• Operculum
• Vent

How many chambers do the hearts of fish have?

• one
• two
• three
• four

What structure do sharks use to detect electrical currents?

• Cuadal fins
• Rostral area
• Ampullae of Lorenzini
• Lateral line

Which two groups of fish have jaws?

• Agnatha and Chondrichthyes
• Agnatha and Osteichthyes
• Chondrichthyes and Osteichthyes

What does the term ectothermic mean?

• The temperature of the organism is regulated by the organism.
• The temperature of the organism is regulated by the environment.
• The temperature of the organism stays constant.

Fish like guppies that hatch eggs inside of their bodies and give "live birth" are called

• oviparous
• ovoviviparous
• viviparous

Organ in fish that allows them to control their up and down movement in the water is the ___

• swim bladder
• pancreas
• stomach 
• gills 

Fins on the top of the fish that keep the fish upright are ___

• dorsal 
• caudal 
• pelvic 
• pectoral 

Organ that is the source of fish oils is the 

• liver
• gallbladder
• pancreas
• stomach