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General Biology

Study Pack

Set 55 Energy Flow And Chemical Cycling In Ecosystems

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Question 1

(Multiple Choice)

Free
Use the figure to answer the question: Use the figure to answer the question: Which of the following best explains why no arrows lead directly from Detritus to secondary consumers? A) detritus is living organic material, and primary consumers only eat dead organisms B) few primary consumers directly eat detritus, and so it is mostly broken down into inorganic compounds by decomposers such as earthworms, fungi, and prokaryotes C) detritus is toxic prior to being broken down by prokaryotes and fungi D) detritus is too small to be located by primary consumers Which of the following best explains why no arrows lead directly from "Detritus" to secondary consumers?

A) detritus is living organic material, and primary consumers only eat dead organisms
B) few primary consumers directly eat detritus, and so it is mostly broken down into inorganic compounds by decomposers such as earthworms, fungi, and prokaryotes
C) detritus is toxic prior to being broken down by prokaryotes and fungi
D) detritus is too small to be located by primary consumers

Answer

Question 2

(Multiple Choice)

Free
Use the figure to answer the question: Use the figure to answer the question: The blue arrow exiting the left side of the Primary consumers box could best be described as which of the following examples of a nutrient transfer? A) decomposition of dead matter B) feces excreted by the primary consumer C) predation of the primary consumer D) production consumed by the primary consumer The blue arrow exiting the left side of the "Primary consumers" box could best be described as which of the following examples of a nutrient transfer?

A) decomposition of dead matter
B) feces excreted by the primary consumer
C) predation of the primary consumer
D) production consumed by the primary consumer

Answer

Question 3

(Multiple Choice)

Free
Which of the following best represents the actions of photoautotrophs?

A) produce oxygen and use carbon dioxide
B) produce, and use, both oxygen and carbon dioxide
C) produce thermal energy to be used by other organisms
D) convert chemical energy to solar energy

Answer