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11th grade ecosystems and food chains

11th grade (Year 12 in England) · 16 questions · Common Core: NGSS.HS-LS2-1, NGSS.HS-LS2-2, NGSS.SEP 5 · England: GCSE Combined Science: Ecology

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Date

Score/ 16

Question 1
A deer population grew from 200 to 220 in one year. What was the percentage growth rate?
Answer%
2
Question 2
A population of yeast cells (thousands per cm³) was counted each day: 15, 30, 60, 114, 186, 246, 285, 300, 297. Which value is closest to the carrying capacity?
- A. 114
- B. 150
- C. 300
- D. 600
3
Question 3
A population with plenty of resources and no predators grows…
- A. in a straight line
- B. more slowly each year
- C. not at all
- D. exponentially (faster and faster)
Question 4
A deer population grew from 500 to 550 in one year. What was the percentage growth rate?
Answer%
5
Question 5
A population of yeast cells (thousands per cm³) was counted each day: 15, 30, 60, 114, 186, 246, 285, 300, 297. Which value is closest to the carrying capacity?
- A. 114
- B. 150
- C. 300
- D. 600
6
Question 6
Why does a population stop growing when it reaches carrying capacity?
- A. Carrying capacity is always 100
- B. The population runs out of DNA
- C. The animals decide to stop breeding
- D. Limiting factors such as food, space and disease balance births and deaths
Question 7
A deer population grew from 400 to 420 in one year. What was the percentage growth rate?
Answer%
8
Question 8
A population of yeast cells (thousands per cm³) was counted each day: 8, 15, 30, 57, 93, 123, 143, 150, 149. Which value is closest to the carrying capacity?
- A. 57
- B. 75
- C. 150
- D. 300
9
Question 9
An invasive species arrives on an island with no predators. What is most likely at first?
- A. nothing changes
- B. rapid population growth that may harm native species
- C. native species grow faster
- D. the invasive species dies out at once
Question 10
A deer population grew from 500 to 625 in one year. What was the percentage growth rate?
Answer%
11
Question 11
A population of yeast cells (thousands per cm³) was counted each day: 20, 40, 80, 152, 248, 328, 380, 400, 396. Which value is closest to the carrying capacity?
- A. 152
- B. 200
- C. 400
- D. 800
12
Question 12
An invasive species arrives on an island with no predators. What is most likely at first?
- A. the invasive species dies out at once
- B. nothing changes
- C. rapid population growth that may harm native species
- D. native species grow faster
Question 13
A deer population grew from 800 to 880 in one year. What was the percentage growth rate?
Answer%
14
Question 14
A population of yeast cells (thousands per cm³) was counted each day: 8, 15, 30, 57, 93, 123, 143, 150, 149. Which value is closest to the carrying capacity?
- A. 57
- B. 75
- C. 150
- D. 300
15
Question 15
An invasive species arrives on an island with no predators. What is most likely at first?
- A. native species grow faster
- B. the invasive species dies out at once
- C. rapid population growth that may harm native species
- D. nothing changes
Question 16
A deer population grew from 500 to 525 in one year. What was the percentage growth rate?
Answer%

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Answer key: 11th grade ecosystems and food chains

1. 10 %
2. C. 300
3. D. exponentially (faster and faster)
4. 10 %
5. C. 300
6. D. Limiting factors such as food, space and disease balance births and deaths
7. 5 %
8. C. 150
9. B. rapid population growth that may harm native species
10. 25 %
11. C. 400
12. C. rapid population growth that may harm native species
13. 10 %
14. C. 150
15. C. rapid population growth that may harm native species
16. 5 %