Ultimate control of testes development is by the ________ which secretes ________.

A. anterior pituitary; testosterone
B. hypothalamus; gonadotropin-releasing hormone
C. anterior pituitary; gonadotropin-releasing hormone
D. seminiferous tubules; inhibin
E. hypothalamus; testosterone


Answer: B

Biology & Microbiology

You might also like to view...

Some bryophyte species are ____, meaning that they grow independently on another organism

a. tracheophytes b. epiphytes c. parasites d. charophytes e. rhizoids

Biology & Microbiology

Which plant hormone listed below is responsible for the symbiotic relationship shown in the accompanying figure?

a. auxin b. gibberellin c. cytokinin d. jasmonic acid e. abscisic acid

Biology & Microbiology

The end result of the process in Figure 20-1 is:


a. sympatric speciation.
b. allopolyploidy.
c. hybridization.
d. rapid speciation.
e. All responses apply

Biology & Microbiology

When a muscle is stimulated before the muscle can fully relax, it can cause ________

A) tendinitis B) summation C) muscle failure D) muscle twitch

Biology & Microbiology