Biology (Mader), 10th Edition

Chapter 34: Digestive Systems and Nutrition

Post-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)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
6
The body wall of a tapeworm has millions of fingerlike projections that _____.
A)increase surface area for absorption of nutrients
B)cling to the host's intestinal wall
C)secrete digestive enzymes
D)trap the tapeworm's prey
7
Microorganisms in the _____ of cows and deer begin the digestion of partially chewed grasses.
A)mouth
B)rumen
C)intestine
D)None of these
8
Nonspecialized teeth are characteristic of _____.
A)herbivores
B)omnivores
C)carnivores
9
Food is ingested through the mouth and makes its way to the stomach via the _____.
A)trachea
B)aorta
C)esophagus
D)small intestine
10
Chemical digestion begins in the _____.
A)mouth
B)esophagus
C)stomach
D)small intestine
11
The _____ prevents food from entering the trachea.
A)epiglottis
B)uvula
C)lower esophageal sphincter
D)diaphragm
12
Chyme is the _____.
A)thick, soupy stomach contents
B)mixture of chewed food and saliva
C)secretions of pancreas
D)undigested food which is eliminated
13
Secretions from the pancreas and liver enter the _____.
A)stomach
B)duodenum
C)large intestine
14
The large intestine _____.
A)produces digestive enzymes
B)absorbs water, salts and some vitamins
C)is much longer than the small intestine
D)All of these
15
Feces are composed of _____.
A)mucus
B)intestinal bacteria
C)undigested plant material
D)All of the above
16
The transport of oxygen is dependent upon sufficient amounts of _____ in the diet.
A)iodine
B)sodium
C)iron
D)zinc
17
Calcium is needed for _____.
A)bone construction
B)blood clotting
C)muscle contraction
D)All of these
18
Conduction of nerve impulses requires _____.
A)calcium
B)sodium
C)potassium
D)All of these
19
The liver's function is to _____.
A)store glucose as glycogen
B)produce bile
C)produce urea
D)All of these
20
Night blindness is prevented by adequate amounts of _____ in the diet.
A)vitamin A
B)vitamin C
C)vitamin K
D)vitamin D
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