SC260 LESSON 2 PART 2 ANSWERS

SC260 LESSON 2 PART 2 ANSWERS - ASHWORTH

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SC260 Lesson 2 Part 2 Answers (Ashworth)

Question 11

5 / 5 points

Long-distance transport of oxygen to the cells of animals is facilitated by the:

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Compared with plants growing in shade, plants growing in sunlight tend to have smaller:

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Net carbon uptake per unit time by a plant is directly related to:

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	the difference between photosynthetic rate and respiration rate.
	photosynthetic rate.
	respiration rate.
	the difference between photosynthetic rate and decomposition rate.
Question 14		5 / 5 points

The value of photosynthetically active radiation above which no further increase in photosynthesis occurs is referred to as:

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	photo-inhibition.
	chlorophyll compensation.
	the light compensation point.
	the light saturation point.
Question 15		5 / 5 points

Plants adapted to low-nutrient environments are characterized by:

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	a high growth rate.
	decreased root production.
	increased leaf longevity.
	faster growth when more nitrogen is available.
Question 16		5 / 5 points

The seasonal cessation of activities accompanied by a reduction in metabolism in response to cold temperatures during winter is called:

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The regulation of body temperature exclusively from the external environment is referred to as:

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Several years of heavy precipitation occur on the Galápagos Islands. What do you predict would happen to the beaks of Darwin's medium ground finches?

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	Populations would crash.
	Disruptive selection on seed size would occur.
	Mid-parent beak size would decrease.
	Offspring beak depth would increase.
Question 19		5 / 5 points

What is the primary ultimate source of genetic variation in a population?

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The Galápagos Islands are inhabited by 13 species of Darwin's finches that evolved from a single species. This is an example of:

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