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1.5 Community Ecology โ Test 1
Q1. Which diversity expresses the rate of change in species composition (turnover) between habitats along a gradient?โ Beta diversity
Q2. Alpha diversity refers to:โ Diversity within a single habitat or community
Q3. Which statement about community ecology is TRUE?โ Edge effects can increase biodiversity
Q4. Which statement about diversity patterns is INCORRECT?โ Alpha diversity is the regional diversity among many communities
Q5. Which ecosystem exhibits the maximum diversity of plants and animals?โ Tropical rainforest
Q6. The way species behave, obtain food and use ecosystem resources is described as:โ Functional diversity
Q7. Which of the following is NOT a biodiversity index?โ MPN index
Q8. Alpha, beta and gamma diversity are all measures of:โ Species diversity at different spatial scales
Q9. Stability of a climax ecosystem largely depends on:โ High diversity of its flora and fauna
Q10. A transition zone from one community or ecosystem to another is called an:โ Ecotone
Q11. Extinction of a keystone species in a community typically results in:โ A decline in species diversity
Q12. A key emergent characteristic of a biological community is:โ Stratification
Q13. Shannon's diversity index is highest when:โ All species are equally abundant
Q14. Higher tropical species richness is NOT plausibly explained by:โ Tropical species having greater climatic tolerance
Q15. Which is NOT a functional aspect of an ecosystem?โ Stratification
Q16. Species diversity generally shows which pattern with latitude?โ Increases towards the equator
Q17. To decide whether sampling effort is adequate to capture a community's diversity, one uses a:โ Species accumulation (saturation) curve
Q18. Maintenance of biodiversity is primarily a prerequisite for:โ Ecological stability
1.5 Community Ecology โ Test 2
Q19. A marshland between dry land and open water is an example of an:โ Ecotone
Q20. Beta diversity measures:โ Change in species composition between communities
Q21. Gamma diversity refers to:โ Total diversity of a large region
Q22. Pielou's evenness index equals 1 when:โ All species are equally abundant
Q23. Simpson's index primarily reflects:โ The chance two random individuals are different species
Q24. The edge effect refers to:โ Greater species richness at the boundary of two communities
Q25. In the species-area relationship S = cA^z, z usually lies between:โ 0.2 and 0.4
Q26. The intermediate disturbance hypothesis predicts maximum diversity at:โ Moderate disturbance
Q27. A keystone species maintains diversity primarily by:โ Preventing a dominant competitor from monopolising resources
Q28. An indicator species is one whose presence or condition:โ Reflects the health or specific conditions of an ecosystem
Q29. A dominant species in a community is one that:โ Is most abundant or has the highest biomass
Q30. Vertical layering of a community into canopy, understory and floor is called:โ Stratification
Q31. Species richness of a community refers to:โ The number of species present
Q32. A guild is a group of species that:โ Exploit the same resources in a similar way
Q33. Gamma diversity of a region increases with:โ Both high alpha and high beta diversity
Q34. Match List I with List II:โ A-ii, B-i, C-iv, D-iii
Q35. A rarefaction curve is used to:โ Compare diversity at equal sample sizes