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Biodiversity and Conservation — Free MYP2 Sciences Practice Questions
1QuestionDefinition and Importance of BiodiversityConcept Practice
2 marks~3 minCriterion A
A diagram of a forest ecosystem shows three labelled components:
| A | species richness |
|---|---|
| B | genetic diversity |
| C | ecosystem diversity |
a
Identify which label matches the definition: "the variety of different species living in an area." [1]
b
Explain why having many different species in an area is important for the survival of that ecosystem. [1]
Solutions
2QuestionDefinition and Importance of BiodiversityAssessment Practice
4 marks~6 minCriterion D
Your school is considering replacing a grassy area — home to various plants and small animals — with a concrete sports court.
a
Identify two benefits that the biodiversity (variety of living things) in the grassy area provides to students. [2]
b
Explain one limitation of using these benefits as the main reason to keep the grassy area instead of building the sports court. [2]
Solutions
3QuestionDefinition and Importance of BiodiversityAssessment Practice
5 marks~8 minCriterion C
The bar graph shows species count and the line graph shows plant biomass fluctuation (the change in total plant matter) during a drought year for four habitats.
| Species richness (number of species) | Forest 45 | Grassland 30 | Wetland 50 | Urban Park 15 |
|---|---|---|---|---|
| Biomass fluctuation | Forest 5% | Grassland 12% | Wetland 3% | Urban Park 20% |
a
Identify the habitat with the lowest biomass fluctuation during the drought. [1]
b
Explain why a habitat with more species is better able to maintain stable biomass during a drought. [2]
c
Compare the species richness and biomass fluctuation of the Wetland and the Urban Park, and use both values to explain which habitat was more resilient (able to recover from stress) to drought. [2]
Solutions
4QuestionDefinition and Importance of BiodiversityAssessment Practice
6 marks~9 minCriterion B
A biologist recorded the number of plant species in four forest patches on a small island.
| Patch size () | 1 | 5 | 10 | 20 |
|---|---|---|---|---|
| Number of plant species | 4 | 9 | 13 | 18 |
a
Describe the relationship between patch size and number of plant species. Use data in your answer. [2]
b
Estimate the number of plant species expected in a 30 patch. Show your reasoning. [2]
c
A biologist claims this pattern would look the same on every island. Describe one piece of evidence from the data that supports this claim and one reason why it might not apply to a different island. [2]
Solutions
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