In an ecosystem, the amount of organic matter produced in a given time that is available for heterotrophs is known as
A. net primary productivity.
B. daily yield.
C. gross primary productivity.
D. effective vitality.
E. net yield.
Answer: A
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A. Flowers, seeds, vascular tissue B. Seeds, flowers, vascular tissue C. Vascular tissue, flowers, seeds D. Vascular tissue, seeds, flowers
The gaseous plant hormone is ____
a. auxin b. gibberellin c. cytokinin d. abscisic acid e. ethylene
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