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Population growth and carrying capacity

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

Name

Date

Score/ 16

1
Question 1
A population of yeast cells (thousands per cm³) was counted each day: 25, 50, 100, 190, 310, 410, 475, 500, 495. Which value is closest to the carrying capacity?
- A. 190
- B. 250
- C. 500
- D. 1000
Question 2
A deer population grew from 200 to 240 in one year. What was the percentage growth rate?
Answer%
3
Question 3
An invasive species arrives on an island with no predators. What is most likely at first?
- A. rapid population growth that may harm native species
- B. native species grow faster
- C. the invasive species dies out at once
- D. nothing changes
4
Question 4
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
Question 5
A deer population grew from 1000 to 1250 in one year. What was the percentage growth rate?
Answer%
6
Question 6
Snowshoe hare and lynx populations rise and fall in cycles, with lynx peaks just after hare peaks. Why?
- A. Hares eat lynx
- B. The two species never interact
- C. Lynx and hares compete for grass
- D. More hares feed more lynx; then lynx eat so many hares that hare numbers fall
7
Question 7
A population of yeast cells (thousands per cm³) was counted each day: 12, 24, 48, 91, 149, 197, 228, 240, 238. Which value is closest to the carrying capacity?
- A. 91
- B. 120
- C. 240
- D. 480
Question 8
A deer population grew from 500 to 550 in one year. What was the percentage growth rate?
Answer%
9
Question 9
A population with plenty of resources and no predators grows…
- A. exponentially (faster and faster)
- B. in a straight line
- C. not at all
- D. more slowly each year
10
Question 10
A population of yeast cells (thousands per cm³) was counted each day: 9, 18, 36, 68, 112, 148, 171, 180, 178. Which value is closest to the carrying capacity?
- A. 68
- B. 90
- C. 180
- D. 360
Question 11
A deer population grew from 200 to 210 in one year. What was the percentage growth rate?
Answer%
12
Question 12
A population with plenty of resources and no predators grows…
- A. exponentially (faster and faster)
- B. more slowly each year
- C. not at all
- D. in a straight line
13
Question 13
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
Question 14
A deer population grew from 200 to 210 in one year. What was the percentage growth rate?
Answer%
15
Question 15
Snowshoe hare and lynx populations rise and fall in cycles, with lynx peaks just after hare peaks. Why?
- A. Hares eat lynx
- B. Lynx and hares compete for grass
- C. The two species never interact
- D. More hares feed more lynx; then lynx eat so many hares that hare numbers fall
16
Question 16
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

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Answer key: Population growth and carrying capacity

1. C. 500
2. 20 %
3. A. rapid population growth that may harm native species
4. C. 400
5. 25 %
6. D. More hares feed more lynx; then lynx eat so many hares that hare numbers fall
7. C. 240
8. 10 %
9. A. exponentially (faster and faster)
10. C. 180
11. 5 %
12. A. exponentially (faster and faster)
13. C. 400
14. 5 %
15. D. More hares feed more lynx; then lynx eat so many hares that hare numbers fall
16. C. 400