Which of the following conclusions is supported by the research of both Went and Charles and Francis Darwin on shoot responses to light?
A) When shoots are exposed to light, a chemical substance migrates toward the light.
B) A chemical substance involved in shoot bending is produced in shoot tips.
C) Once shoot tips have been cut, normal growth cannot be induced.
D) Light stimulates the synthesis of a plant hormone that responds to light.
B
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What method was used to inoculate the plate shown here?
CDC
A. Swab plate B. Pour plate C. Streak plate D. Spread plate
In a population of organisms, random mutations are retained or eliminated through the process of ____
What's the answer for this statement?
In which general direction do the prevailing winds blow between 30° North and the equator?
A) from south to north B) from east to west C) from north to south D) from southwest to northeast
Which of the following is true of iron sources and functions?
a. The only dietary sources of iron are meat, fish, and poultry. b. Myoglobin and hemoglobin contain equal amounts of iron. c. Heme iron is always better absorbed than non-heme iron. d. The body cannot recycle iron for other uses.