Biodiversity and Diversity Index Quiz

What does species richness refer to in the context of a diversity index?

• The total biomass of species in an area

• The number of genetically related groups in a site

• The proportion of different species in an area

• The genetic diversity within a single species

Why is high biodiversity considered beneficial for ecosystems?

• It enhances ecosystem stability and productivity

• It reduces the number of species in an area

• It leads to increased soil erosion

• It makes ecosystems more vulnerable to invasions

How does a diverse plant habitat contribute to ecosystem stability?

• By reducing the number of plant species

• By increasing the likelihood of soil erosion

• By providing a single type of forage for insects

• By enhancing resistance to drought and disease

What role do nitrogen-fixing plants play in an ecosystem?

• They prevent water absorption

• They improve soil fertility

• They increase soil erosion

• They deplete soil nutrients

What is commensalism in the context of plant diversity?

• A relationship where one species benefits and the other is unaffected

• A relationship where both species are harmed

• A relationship where both species benefit

• A relationship where one species benefits and the other is harmed