Which of the following were early tetrapod
innovations?
a. limbs evolved from lobed fins
b. pulmonary circulatory system
c. inner ear changes to detect airborne sounds
d. eyelids
e. all of these were early tetrapod innovations
E
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A ______ making too much prolactin would result in the overproduction of milk in the mammary glands.
a. thyroid gland b. pancreas c. parathyroid gland d. pituitary gland
The human urinary system consists of all of the
following structures EXCEPT
a. urinary bladder. b. urethra. c. two adrenal glands. d. two ureters. e. two kidneys.
Which is an example of secondary succession?
A) Beach grasses colonize a newly formed sand dune. B) Retreating glaciers leave alluvial soils for cottonwood trees to colonize. C) A shift in river flow introduces sediment to a rocky area. D) A farmer allows an agricultural field to return to native grassland.
A characteristic that is shared by snakes and birds is ________
A) being ectothermic B) the presence of only a single ovary in females C) the amniotic egg D) being endothermic