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Organisms and Populations
Biology · Chapter 16 · Unit 5: Ecology and Environment
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Your path through this chapter
Visual lesson Beta
- Part 1: Population attributes and growth16 slides
- Part 2: Life history and population interactions17 slides
Flashcards Beta
30 cards for quick recall of key terms and facts.
Review the cards Step 3: Not startedPractice
62 board-style questions with instant checks: Multiple choice 26, Short answer 15, Numerical 8, Assertion and reason 5.
Practise Step 4: Not startedChapter test Free
Short and long chapter tests in board pattern, with results and analysis.
Step 5: Not started- Chapter test (long) — Organisms and Populations · 40 marks · 100 min
- Chapter test (short) — Organisms and Populations · 20 marks · 50 min
Topics 5
- Population attributes: density and its measurement, natality, mortality, immigration, emigration, sex ratio, age pyramids, carrying capacity
- Population growth: exponential and logistic models with equations and graphs
- Life history variation and reproductive fitness
- Mutualism and competition (interspecific, interference, competitive release, Gause's competitive exclusion principle)
- Predation and anti-predator adaptations; parasitism (ecto-, endo- and brood parasites); commensalism; amensalism