Polychaetas and oligochaetes are named for the bristles that are called
A. ganglia.
B. cnidocyst.
C. chaetae.
D. radula.
E. flagella.
Answer: C
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Answer the following statement true (T) or false (F)
The ____ cells are stimulated by ____ to secrete testosterone
a. Sertoli; LH b. Sertoli; FSH c. Leydig; LH d. Leydig; FSH e. Sertoli and Leydig; LH
What are some challenges land plants face compared to life in the water?
A. Obtaining resources from the air and soil instead of from water B. Obtaining and retaining moisture C. Staying upright against the pull of gravity D. All of the above are challenges faced by land plants.
The __________ circuit carries blood from the heart to body tissues, and then returns it to the heart. Fill in the blank(s) with the appropriate word(s)