Leeches become __________ when searching for food.
A) negatively phototactic
B) negatively thigmotactic
C) negatively chemotactic
D) positively phototactic
E) positively thigmotactic
Correct Answer:
Verified
Q29: Leeches typically lack
A)segments.
B)a digestive tract.
C)sense organs.
D)a pharynx.
E)setae.
Q30: Leeches belong to the annelid clade
A)Oligochaeta.
B)Chaetognatha.
C)Hirudinea.
D)Gnathobdellida.
E)Errantia.
Q31: The earthworms (and their relatives)and leeches are
Q32: The _ is a dorsal invagination that
Q33: Annelids convert ammonia to urea in
A)the metanephridia.
B)calciferous
Q35: Which of the characters below is not
Q36: The anticoagulant secreted by leech salivary glands
Q37: During feeding,the _ of earthworms helps to
Q38: In annelids,the _ is a site of
Q39: Recent molecular studies suggest that members of
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