457296
Description
Quiz by Bronte Penney, updated more than 1 year ago
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Created by Bronte Penney
over 10 years ago
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Question 1
Question
What is an ecosystem?
Answer
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All the organisms living in a particular area and all the non-living conditions
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Organisms living in a community, including all the non-living conditions
Question 2
Question
There are 4 different types of bacteria involved in the nitrogen cycle. Which type of bacteria breaks down proteins and urea and turns them into ammonia?
Answer
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Nitrifying Bacteria
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Decomposers
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Denitrifying Bacteria
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Nitrogen-fixing Bacteria
Question 3
Question
What does each bar of a pyramid of biomass stand for?
Answer
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the number of organisms
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the mass of living material
Question 4
Question
Why is carbon monoxide poisonous?
Answer
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It kills red blood cells in the body
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It replaces oxygen and combines with red blood cells
Question 5
Question
What is the name of the bacteria that turns nitrates back into Nitrogen gas?
Answer
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Nitrogen-fixing Bacteria
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Nitrifying Bacteria
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Denitrifying Bacteria
Question 6
Question
What percentage of the atmosphere is Nitrogen gas?
Answer
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78%
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21%
Question 7
Question
Why do plants need nitrogen?
Answer
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For growth
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To speed up the rate of photosynthesis
Question 8
Question
Here is a food chain:
dandelion ----> rabbit ----> fox ----> flea. Which is the tertiary consumer
Answer
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fox
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rabbit
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flea
Question 9
Question
Only 10% of energy is transferred from one trophic level to another. Why is this?
Answer
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energy is lost through heat, respiration etc
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Organisms can only take in a maximum of 10%
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Organisms only need 10% of the energy
Question 10
Question
All the species in a food web are interdependent. This means if one species changes it doesn't affect the others.
Answer
- True
- False
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