Question

what does species diversity refer to?
a. variety of ecosystems within a region
b. variety of genes within a population
c. variety of different species in a particular area
d. variations in flower color and size

what role does biodiversity primarily play in maintaining the balance and stability of ecosystems?
a. providing resilience and stability
b. fragmentation of species
c. ecosystem degradation
d. habitat destruction

which factor can lead to unique biodiversity in certain regions?
a. urbanization and industrialization
b. climate uniformity across regions
c. increased pollution levels
d. geographical isolation

Explanation:

1. Species diversity is about the variety of different species in a given area. Option a refers to ecosystem - level diversity, option b is about genetic diversity, and option d is a very narrow example within a species.
2. Biodiversity provides resilience and stability to ecosystems. The other options (fragmentation, degradation, and destruction) are negative impacts on ecosystems rather than roles of biodiversity.
3. Geographical isolation can lead to unique biodiversity as it can cause speciation and prevent gene - flow, leading to the evolution of distinct species. Urbanization, climate uniformity, and increased pollution are generally negative factors for biodiversity.

Answer:

1. c. Variety of different species in a particular area
2. a. Providing resilience and stability
3. d. Geographical isolation