The diagram shows part of the carbon cycle with several arrows missing from the diagram - Leaving Cert Biology - Question 3 - 2020
Question 3
The diagram shows part of the carbon cycle with several arrows missing from the diagram. Answer the questions that follow by inserting arrows on the diagram as appro... show full transcript
Worked Solution & Example Answer:The diagram shows part of the carbon cycle with several arrows missing from the diagram - Leaving Cert Biology - Question 3 - 2020
Step 1
Draw one arrow labelled R on the diagram to represent respiration.
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Answer
The arrow R should be drawn from 'Carbon compounds in Humus' to 'Carbon dioxide in atmosphere', indicating that respiration releases carbon dioxide back into the atmosphere.
Step 2
Draw one arrow labelled P on the diagram to represent photosynthesis.
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The arrow P should be drawn from 'Carbon dioxide in atmosphere' to 'Carbon compounds in plants', showing that plants take in carbon dioxide for photosynthesis.
Step 3
Draw one arrow labelled B on the diagram to represent burning.
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The arrow B should be drawn from 'Fossil Fuels' to 'Carbon dioxide in atmosphere', representing the burning of fossil fuels which releases carbon dioxide.
Step 4
Name a carbon compound plants use to store food.
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Plants use starch as a carbon compound to store food.
Step 5
Name the process shown by arrow A.
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The process shown by arrow A is decomposition.
Step 6
Name a group of organisms which carry out the process labelled A.
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Bacteria and fungi, such as mushrooms or molds, carry out the process of decomposition.
Step 7
Suggest one way of reducing high levels of carbon dioxide in the atmosphere.
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One way to reduce high levels of carbon dioxide in the atmosphere is to plant more trees.
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