The posterior pituitary secretions produce their effects
a. on the gonads.
b. in the thyroid glands.
c. on adrenal glands.
d. on mammary glands.
e. on thirst mechanism.
E
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Allivibrio fischeri symbionts benefit the Hawaiian bobtail squid by
A) mimicking the light of the moon, which helps the squid avoid nocturnal predators. B) providing essential amino acids missing from the squid's diet. C) degrading the cellulosic cell walls of the phytoplankton the squid eats. D) providing essential amino acids missing from the squid's diet and degrading the cellulosic cell walls of the phytoplankton the squid eats.
Which process is the driving force behind the movement of xylem sap upward through the tracheids and vessels in xylem?
1.Bulk flow 2.Osmosis 3.Plasmolysis 4.Transpiration
Which of the following groups of plants contain microphylls?
A. Bryophytes B. Angiosperms C. Gymnosperms D. Pteridophytes E. Lycophytes
Carbon fixation begins with carbon dioxide combining with a 5-carbon molecule,
A. glucose. B. ribulose. C. NADP+ D. glyceraldehyde-3-phosphate.