Energy Transformation

Question 1

Explain why cold-blooded organisms like reptiles have a higher rate of secondary productivity than warm-blooded mammals.

Revolt · Accepted Answer

Secondary productivity is the rate at which consumers convert chemical energy into their own biomass. This rate is based on the organism’s metabolism, because organisms with higher metabolisms have to consume more energy to maintain their metabolic processes relative to how much energy is converted into their biomass. Reptiles have slower metabolisms than mammals and do not consume as much energy relative to their body mass as mammals, giving them a higher rate of secondary productivity.

Question 2

When sunlight strikes Earth, approximately _______.a.30% is reflected back into spaceb.70% is reflected back into spacec.50% is absorbed by the atmosphered.80% is absorbed by land and oceans

Revolt · Accepted Answer

A

Question 3

Which of the following is not true about energy in ecosystems?a.Energy is transferred between organisms.b.Energy is recycled after flowing through ecosystems.c.Most energy enters ecosystems as sunlight.d.Ecosystems require a continuous influx of new energy.

Revolt · Accepted Answer

B

Question 4

What percentage of a lower trophic level’s energy flows to the next higher trophic level?a.1%b.10%c.50%d.100%

Revolt · Accepted Answer

B

Question 5

Which of the following is not a direct fate of the energy flowing through photosynthesis?a.carnivoresb.cellular respirationc.herbivoresd.heat sinks

Revolt · Accepted Answer

A

Energy Transformation Answers

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