Grade 6 · Science · Unit 2 of 11
Biodiversity
Variety makes life strong
What your child practises
Why a variety of life makes species and communities more resilient, how species depend on each other, and why biodiversity matters to people.
Ontario Curriculum expectation: B1.1, B2.2–B2.5 · biodiversity within species, among species and among habitats, and how living things depend on one another
Sample questions
A taste of this unit. In the app, questions change every time and get easier or harder to match your child.
Question 1
A tick feeds on a dog's blood and harms it. This relationship is called…
- pollination
- parasitism
- mutualism
Show answer
parasitism
Hint: One organism benefits and the other is harmed.
Question 2
A food chain shows…
- where organisms live
- how organisms look
- how energy passes from one organism to another
Show answer
how energy passes from one organism to another
Hint: Plants make food, and animals eat plants or each other.
Question 3
What do decomposers such as fungi do?
- Break down dead matter and return nutrients to the soil
- Make food from sunlight
- Hunt prey
Show answer
Break down dead matter and return nutrients to the soil
Hint: Decomposers recycle nutrients.
Question 4
Which is a benefit of biodiversity for people?
- Food, medicines and clean air and water
- More litter
- Fewer insects pollinating crops
Show answer
Food, medicines and clean air and water
Hint: Healthy natural systems provide services people rely on.
Question 5
Bees get nectar from flowers, and flowers get pollinated. This relationship is called…
- parasitism
- competition
- mutualism
Show answer
mutualism
Hint: Both sides benefit.
Question 6
When a wetland is drained, what happens to the biodiversity it supported?
- It stays the same for all species
- It decreases
- It increases
Show answer
It decreases
Hint: Habitat loss removes homes and food.