Glencoe Biology

Section 4: Segmented Worms

Self-Check Quizzes

1
A ____ is a muscular sac containing hard particles that grind soil and food.
A)septa
B)pharynx
C)gizzard
D)crop
2
What functions do nephridia have?
A)aiding movement and producing eggs
B)transporting oxygen and releasing carbon dioxide
C)detecting light and aiding movement
D)collecting waste and maintaining homeostasis
3
What is the name and function of the hairlike structures projecting from this earthworm?

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A)setae, provide an anchor for pushing through soil
B)crops, aid respiration
C)gizzards, secrete lubrication
D)setae, aids in respiration
4
How does a worm's segmented structure allow it to survive damage?
A)segments often break off and regenerate.
B)Multiple segments can take over crucial functions.
C)Segmented worms can survive without respiration.
D)Segmented worms can survive without digestion.
5
How do some nonnative earthworms negatively affect forest ecology?
A)They secrete enzymes that change the DNA of plants.
B)They result in dead matter that cannot be decomposed.
C)They remove leaf litter crucial for moisture and habitat.
D)They become parasitic to other earthworms.
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