Animal systems 1

Why do filter feeders need to move through the water to eat?

• because they need to continue to breathe while eating

• because they don't have teeth to chew prey

• because they need water to move through their digestive system to catch nutrients

• because they are too slow to catch prey if the are not moving

What do detritivores eat to get nutrients?
(a)  

• Decaying matter
• Meat and plants
• Wood and dirt
• Minerals in water

If an animal gets rid of waste from the opposite end of the body from where it eats, what type of digestive system does it have?

• Digestive tract

• Digestive cavity

• Filter feeder

• Incurrent pore

Why do cows have a rumen?
(a)  

• To use bacteria that digest cellulose
• To break apart protein
• To move waste through the body
• To store blood in the circulatory system

What two gases are exchanged in respiration?

• Carbon dioxide and carbon monoxide

• Oxygen and hydrogen

• Carbon dioxide and oxygen

• Carbon monoxide and oxygen

Which of the following are organs that can be used for respiration? (check all that apply) (a)   ​

• skin

• gills

• lungs

• kidneys

• hearts

In humans, where does gas exchange occur in respiration?
(a)  

• In the alveoli
• In the trachea
• in the book lung
• in the spiracle

Which type of circulatory system does NOT keep blood in blood vessels at all times?

• Single-loop

• Double-loop

• open

• closed

In humans, where do the blood vessels from both sides of the heart take the blood?
(a)  

• to the lungs and the body
• to the digestive system and kidneys
• to the brain and the spinal cord
• to the right and left side of the body

What organs maintain water balance and eliminate waste?