Lenticels function to:
a. protect undeveloped embryonic shoots.
b. permit gas exchange through the periderm.
c. support leaves and flowers.
d. absorb water and dissolved nutrient minerals.
e. anchor a plant in the ground.
b
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In chordates, the ____ is a digestive system structure just posterior to the mouth
a. pharynx b. neural crest c. oral hood d. notochord e. cranium
All of the following are ways to determine the function of annotated genes except
a. looking for similar gene sequences of known function b. examining the putative protein structure c. gene knockout experiments d. gene knockdown experiments e. finding a pseudogene for that gene
If a woody plant in dormancy is placed in a
greenhouse so that only one limb is exposed to the cold winter temperatures, eventually the a. whole plant breaks dormancy and starts growing. b. parts of the plant that were inside the greenhouse start blooming. c. limb exposed to the low temperature dies. d. limb exposed to the low temperature breaks dormancy. e. limb exposed to the low temperature never forms seeds.
Blood pressure drives the first step in urine formation, called _____________________.
A. tubular reabsorption B. antidiaresis C. tubular secretion D. glomerular filtration E. aldosterone processing