The pineal gland of fish appears to respond to __________ that enables it to aid in synchronizing activity patterns.
A) light
B) temperature
C) water quality
D) electric charges
E) ion concentration
Correct Answer:
Verified
Q8: A(n)_ has receptors to which chemical messengers
Q9: Hormonal regulation in higher vertebrates is based
Q10: A substance that stimulates the excretion of
Q11: One of the hormones stored,and then released
Q12: The receptor mechanism used by steroid hormones
Q14: What do hormones released by the bursa
Q15: Hormones that are biochemically _ usually involve
Q16: In insects,the hormone _ induces molting.
A)ecdysiotropin
B)prothoracicotropic hormone
C)ecdysone
D)bursicon
E)juvenile
Q17: Which glands secrete calcitonin in jawed fishes
Q18: Hormones circulate through _ to the body
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