Question 1

Which of the following statements applies to an ecosystem with a high level of biodiversity?

Accepted Answer

All of the statements apply to an ecosystem with high biodiversity.

Question 2

Approximately what percentage of the known biodiversity on Earth is composed of plants?

Accepted Answer

A

Question 3

The use of noncultivated fruit,animal skins,fiber,beeswax,and fish are examples of the ________ value of biodiversity.

Accepted Answer

Consumptive use refers to the direct utilization of natural resources such as noncultivated fruit, animal skins, fiber, beeswax, and fish for personal or commercial purposes.

Question 4

Which of the following statements about biological diversity is NOT true?

Accepted Answer

Biodiversity is not evenly distributed throughout the biosphere; it varies greatly across different regions and ecosystems.

Question 5

Which of the following fields of study provide useful information for making decisions about conservation?

Accepted Answer

All these fields contribute valuable insights into conservation efforts, such as understanding ecosystems (agronomy), animal health (veterinary science), genetic diversity (genetics), and organism functions (physiology).

Question 6

As human civilization spread around the world,there were species that benefited greatly from new human-made habitats.However,generally with the expansion of human populations and agriculture,

Accepted Answer

The expansion of human populations and agriculture typically leads to habitat destruction, pollution, and other factors that cause a dramatic drop in biological diversity.

Question 7

Which of the following statements about keystone species is NOT true?

Accepted Answer

Keystone species are not defined by being subdivided into isolated populations due to habitat fragmentation; rather, they play a critical role in maintaining the structure of an ecological community.

Question 8

All of the following are ways in which biodiversity is directly valuable to humans EXCEPT

Accepted Answer

Contributions to biogeochemical cycles are an indirect value of biodiversity, as they support ecosystem functions rather than providing direct benefits to humans.

Question 9

The use of wheat,corn,rice and other crops derived from wild ancestors is an example of the ________ value of biodiversity.

Accepted Answer

The use of crops like wheat, corn, and rice, which are derived from wild ancestors, is an example of the agricultural value of biodiversity, as these crops are cultivated for food production.

Question 10

Which of the following is NOT an indirect value of biodiversity in an ecosystem?

Accepted Answer

All the choices listed are roles played by biodiversity, contributing to ecosystem services and functions.

Question 11

Which of the following statements concerning the indirect values of biodiversity is NOT correct?

Accepted Answer

Technology cannot artificially re-create biogeochemical cycles.

Question 12

Species that are revered by humans due to their appearance or emotional ties are

Accepted Answer

Flagship species are those that are charismatic and often used to raise awareness and funds for conservation efforts due to their appeal to humans.

Question 13

________ is (are)associated with 85% of the cases of threatened and endangered species.

Accepted Answer

Habitat loss is the primary factor associated with 85% of the cases of threatened and endangered species, as it directly affects their living environment and resources.

Question 14

Madagascar is considered a biodiversity "hotspot" because

Accepted Answer

Madagascar is considered a biodiversity hotspot because it contains an unusually high concentration of species, many of which are endemic, meaning they are found nowhere else in the world.

Question 15

What is the primary goal of conservation biology?

Accepted Answer

Conservation biology primarily aims to manage and preserve Earth's biodiversity, ensuring the survival of various species and ecosystems.

Question 16

Which of the following are causes for extinction?

Accepted Answer

Habitat loss, exotic species, and pollution are all major causes of extinction.

Question 17

Introduction of alien or exotic species into new ecosystems can occur through

Accepted Answer

Alien or exotic species can be introduced through colonization, accidental transport, and agricultural or horticultural activities, making all the choices correct.

Question 18

Rosy periwinkle,the nine-banded armadillo,and some species of fungus and bacteria have ________ value to man.

Accepted Answer

Rosy periwinkle, the nine-banded armadillo, and some species of fungus and bacteria have medicinal value to humans. The rosy periwinkle is known for its cancer-fighting properties, the nine-banded armadillo is used in leprosy research, and certain fungi and bacteria are sources of antibiotics.

Question 19

Which of the following statements about extinction is TRUE?

Accepted Answer

Wild species often become extinct due to a combination of factors such as habitat loss, climate change, pollution, and overexploitation.

Question 20

The identification and mitigation of factors causing habitat decline is known as

Accepted Answer

A habitat restoration plan involves identifying and mitigating factors causing habitat decline to restore and conserve ecosystems.

Quiz 47: Conservation of Biodiversity