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 labelled R should point from 'Carbon compounds in animals' 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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Answer
The arrow labelled P should point from 'Carbon dioxide in the atmosphere' to 'Carbon compounds in plants', representing the process of photosynthesis where plants absorb carbon dioxide.
Step 3
Draw one arrow labelled B on the diagram to represent burning.
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The arrow labelled B should point from 'Fossil Fuels' to 'Carbon dioxide in atmosphere', indicating that the burning of fossil fuels releases carbon dioxide into the atmosphere.
Step 4
Name a carbon compound plants use to store food.
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Plants use starch as a carbon compound for storing food.
Step 5
Name the process shown by arrow A.
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The process shown by arrow A is decomposition, where organic matter breaks down into simpler substances.
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, are the organisms that 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, which absorb carbon dioxide during photosynthesis.
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