Protonephridia are found in ____
a. annelids
b. mammals
c. flatworms
d. insects
e. reptiles
ANSWER: c
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In which of the following types of organisms would you expect to find a contractile vacuole?
a. sea coral b. lymphocyte c. amoeba d. planaria
Striated muscle has light and dark bands. The light bands are called ________, whereas the dark bands are called ________
A) Z lines; M lines B) H zones; M zones C) A bands; I bands D) I bands; A bands E) M lines; A bands
Which statement about meristematic tissue is true?
a. It causes determinate growth in leaves and flowers. b. It is found at the base of all stems and roots. c. It is capable of continually dividing throughout the life of the plant. d. Its cells differentiate soon after development. e. Its cells are dead at functional maturity.
Vitamin D is really a hormone.
a. true b. false