Quiz about Science

Question 1

Aluminum is refined from bauxite, which is found in the ground under rainforests. Humans must destroy this habitat to mine the bauxite and make aluminum. This type of habitat destruction will most likely result in ---

Accepted Answer

C. a decrease in biodiversity

Answer

A. an increase in rainfall

Answer

B. an increase in number of species

Answer

D. a decrease in cloud formation

Question 2

In an ecosystem, which type of animal would best be described as a secondary consumer?

Accepted Answer

Carnivore

Answer

Herbivore

Answer

Omnivore

Answer

Decomposer

Question 3

In an ecosystem, which animal would best be described as a secondary consumer?

Accepted Answer

C. Coyote

Answer

A. Rabbit

Answer

B. Grasshopper

Answer

D. Human

Question 4

Which best describes a type of organism that lives on, and feeds off of plants or other organisms?

Accepted Answer

omnivores

Answer

saprophytes

Answer

autotrophs

Answer

tracheophytes

Question 5

An organism that stalks, kills, and eats other animals is known as a ---

Accepted Answer

consumer

Answer

scavenger

Answer

herbivore

Answer

producer

Question 6

An organis that creates nutrients using energy from the sun, is known as a ----

Accepted Answer

D. producer

Answer

A. predator

Answer

B. scavenger

Answer

C. herbivore

Question 7

Which of the following situations contributes to the sustainability of an ecosystem

Accepted Answer

A. Increase in biodiversity

Answer

B. Decrease in biodiversity

Answer

C. Extinction of a population from the ecosystem

Answer

D. Removal of many populations of organisms

Question 8

Complete this statement. The more diverse an ecosystem is ----

Accepted Answer

C. the more stable it is

Answer

A. the more threatened its populations are

Answer

B. the more similar the species will be

Answer

D. the few varieties of species are present

Question 9

Which of the following is not an example of how biodiversity contributes to the sustainability of an ecosystem?

Accepted Answer

C. Creating a limited gene pool for future generations

Answer

A. Controlling pest species

Answer

B. Providing potential for medical discoveries

Answer

D. Regulating the chemistry of air and water supply

Question 10

An ecosystem experiences a ten year drought. As a result of the drought, many plant and animal species are not able to survive. What will be the effect on the biodiversity and sustainability of the ecosystem?

Accepted Answer

D. Decreased biodiversity and decreased sustainability

Answer

A. Increased biodiversity and increased sustainability

Answer

B. Decreased biodiversity and increased sustainability

Answer

C. Increased biodiversity and decreased sustainability

Question 11

Why does higher biodiversity cause an ecosystem to be more sustainable?

Accepted Answer

B. There are a greater variety of genes and species in the ecosystem.

Answer

A. There are more types of organisms competing for living space in the ecosystem.

Answer

C. There are more animals preying on one another in the ecosystem.

Answer

D. More organisms decrease the rate of disease in and ecosystem.

Question 12

Refer to the food web. If the grasses in each ecosystem are attacked and killed by a disease, which ecosystem will most likely survive?

Accepted Answer

B. The tundra ecosystem, because there is a variety of producers.

Answer

A. The prairie ecosystem, because few organisms eat grass.

Answer

C. The prairie ecosystem, because there a fewer top predators.

Answer

D. The tundra ecosystem, because it has more herbivores.

Question 13

Which statement below best describes how biodiversity contributes to the sustainability of an ecosystem?

Accepted Answer

A. A variety of plant and animal species allows for more survivors of a natural disaster.

Answer

B. Having more species in an ecosystem allows the human population to increase in size.

Answer

C. Low biodiversity reduces the competition for resources, which helps native species survive.

Answer

D. Few species in the ecosystem reduces the likelihood that disease spreads through the ecosystem.

Question 14

Based on the table of observations, which ecosystem is likely to be the least sustainable?

Accepted Answer

A. Ecosystem 1, because it has the fewest species

Answer

B. Ecosystem 2, because it includes both aquatic and terrestrial species.

Answer

C. Ecosystem 3, because it has few predators.

Answer

D. Ecosystem 4, because it supports many animals.

Question 15

Students were asked to make a claim supported with evidence to answer the question, "Which ecosystem would be most sustainable if all the grasses died from severe drought?" What claim is valid and supported by the evidence?

Accepted Answer

C. The forest ecosystem is most sustainable because most of the animals can eat other organisms.

Answer

A. The forest ecosystem is most suitable because there are more top predators.

Answer

B. The grassland ecosystem is most sustainable because there are fewer organisms that eat grass.

Answer

D. The grassland ecosystem is most sustainable because there is less competition for food.

Question 16

An ecosystem that is not sustainable can break down when a natural disaster occurs. This can lead to organisms in the ecosystem either leaving the area or dying off. Increased biodiversity results in a more sustainable ecosystem because ---

Accepted Answer

B. a greater variety of species present allows more organism to adapt after changes occur

Answer

A. a greater number of plant species means that there is less barren land.

Answer

C. the transition area between two ecosystems is narrower.

Answer

D. there are few species to be affected by environmental stressess.

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