AP Biology (Mader), 11th Edition

Chapter 34: Digestive Systems and Nutrition

Pre-Test

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)have an incomplete digestive tract
C)have a digestive system with many specialized parts
D)have a mouth and an anus
3
In earthworms, food is crushed and then ground up by sand in the:
A)Pharynx
B)Gizzard
C)Stomach
D)Gastrovascular cavity
4
All of the following are filter feeders EXCEPT:
A)Baleen whales
B)Clams
C)Tubeworms
D)Squid
5
Organisms that feed only on plants are referred to as _____.
A)herbivores
B)omnivores
C)carnivores
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