Question 1

Which of the following best describes structural diversity within an ecosystem?

Accepted Answer

The range of physical shapes and sizes of organisms and habitats within an ecosystem.

Question 2

A group of warbler species feeds in different areas of the same tree, as shown in the provided diagram. This is an example of:

Accepted Answer

Niche differentiation.

Question 3

Which of the following is NOT a criterion for defining a species according to the biological species concept?

Accepted Answer

Living in the same geographic area.

Question 4

Which level of biodiversity is most directly affected when a monoculture of crops is planted over a large area?

Accepted Answer

Species diversity.

Question 5

Which of the following equations best represents the relationship between biodiversity and ecosystem resilience?

Accepted Answer

$$R = B 	imes E$$

Question 6

Which of the following is an example of commensalism?

Accepted Answer

Remora fish attaching to a shark for transportation and leftover food.

Question 7

A drought caused by climate change leads to the loss of several plant species in a region. Which of the following is a likely consequence?

Accepted Answer

Decrease in ecosystem diversity.

Question 8

Which of the following best explains why biodiversity is important for maintaining viable ecosystems?

Accepted Answer

It provides increased resilience to environmental stress and resistance to diseases.

Question 9

Suppression of wildfires in a forest ecosystem can lead to:

Accepted Answer

Reduced structural diversity and fewer microhabitats.

Question 10

Which of the following is a direct effect of habitat destruction on humans?

Accepted Answer

Economic impact on tourism and forestry.

Question 11

If a species is defined by its ability to interbreed and produce fertile offspring, which of the following organisms would NOT fit this definition?

Accepted Answer

Bacteria reproducing asexually.

Question 12

Which of the following is an example of an interspecies interaction involving transportation?

Accepted Answer

Seeds sticking to animals and being carried to new locations.

Question 13

Which equation best represents the relationship between the number of species ($$S) $$and ecosystem diversity ($$E$$)?

Accepted Answer

$$E = S 	imes D$$

Question 14

Which of the following is a risk associated with overharvesting wild plants for medicinal purposes?

Accepted Answer

Loss of potential new sources of medicine.

Question 15

Which of the following best describes genetic diversity?

Accepted Answer

The variety of genes present within a species.

Question 16

Which of the following is a consequence of reduced structural diversity in an ecosystem?

Accepted Answer

Decrease in biodiversity.

Question 17

Which of the following is an example of an interspecies interaction involving hygiene?

Accepted Answer

Small fish or shrimp cleaning parasites off larger fish.

Question 18

Which of the following is a benefit of biodiversity for humans?

Accepted Answer

Provides sources of natural medicines.

Question 19

Which of the following is a plausible effect of climate change on biodiversity?

Accepted Answer

Loss of habitats for some species and expansion for others.

Question 20

Which of the following best describes ecosystem diversity?

Accepted Answer

The distribution and community patterns of species within ecosystems.

L1 Biodiversity

Study Guide - Practice Questions