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Pre-Test
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1
Digestion contributes to homeostasis by _____.
A)producing hormones which regulate blood chemistry
B)filtering out nitrogenous waste
C)providing the body with nutrients needed to sustain cells
D)producing red blood cells which transport oxygen
2
Planarians _____.
A)rely on a circulatory system to distribute nutrient molecules
B)perform extracellular and intracellular digestion
C)have a digestive system with many specialized parts
D)All of these
3
The food is ground up and churned in the _____ of an earthworm.
A)pharynx
B)gizzard
C)stomach
D)gastrovascular cavity
4
Which of the following are filter feeders?
A)Baleen whales
B)Clams
C)Tubeworms
D)All of these
5
Organisms that feed only on plants are referred to as _____.
A)herbivores
B)omnivores
C)carnivores





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