WorksheetsIB Biology 4.3
Total questions: 18
Worksheet time: 14mins
The diagram shows the carbon cycle. Which two processes correspond to the labelled arrows?
K is combustion and L is catabolism
J is anabolism and K is respiration
J is combustion and K is respiration
J is anabolism and L is catabolism
The diagram shows a version of the carbon cycle. What is indicated by the numbers?
1: death of consumers
2: cell respiration in saprotrophs
3: cell respiration in producers
1: death of consumers
2: incomplete decomposition
3: photosynthesis in producers
1: cell respiration in saprotrophs
2: incomplete decomposition
3: photosynthesis in producers
1: cell respiration in consumers
2: cell respiration in saprotrophs
3: cell respiration in producers
What favors the production of peat?
I. Presence of organic matter
II. Anaerobic conditions
III. Acidic conditions
I and II only
I and III only
II and III only
I, II, and III
The diagram represents the carbon cycle. Which process has the greatest relative role in transferring carbon?
Decomposition
Combustion
Photosynthesis
Cell respiration
The diagram shows some of the links of in the carbon cycle.
What processes are taking place and I, II, and III?
I: photosynthesis
II: fossilization
III: combustion
I: cell respiration
II: fossilization
III: greenhouse effect
I: photosynthesis
II: decomposition
III: combustion
I: cell respiration
II: decomposition
III: greenhouse effect
How is peat formed?
From methanogenic archaeans under anaerobic and acidic conditions in deep sea vents
From partially decomposed organic matter under anaerobic and acidic conditions in waterlogged soils
From porous limestone under high pressure, aerobic and alkaline conditions in ocean beds
From bituminous coal under high pressure, anaerobic and acidic conditions below ground
The diagram shows the carbon cycle. Which letter indicates respiration?
A
B
C
D
Which of the following creates a calcium carbonate structure?
plants
cows
corals
decomposers
How do animals get carbon?
By eating plants and or other animals.
They absorb it from the atmosphere.
From the ground
They do not get carbon from anywhere.
How does carbon become locked inside the earth?
Tree roots expel carbon into the soil as they grow.
Humans use machines to pump carbon dioxide into large underground rocks.
Rocks become richer in carbon as time goes by.
The carbon-rich bodies of plants and animals decay into the earth after they die.
Identify the type of organisms that can take up carbon dioxide and convert it into organic compounds
Consumers
Detritivores
Saprotrophs
Autotrophs
Identify the gas released through the breakdown of organic matter in anaerobic conditions by a group of prokaryotic archaeans
Nitrogen
Methane
Carbon monoxide
Sulphur dioxide
Identify the process carried out by both heterotrophs and autotrophs that returns carbon dioxide to the atmosphere
Fossilization
Respiration
Partial decomposition
Photosynthesis
Identify the acid that forms when carbon dioxide reacts with water
Hydrochloric acid
Sulphuric acid
Carbonic acid
Nitric acid
Identify the process that is causing a large and increasing quantity of carbon dioxide into the atmosphere
Combustion
Photosynthesis
Fossilization
Methanogenesis
