Human Influences on Ecosystems(Senior Class Biology Study by Topics) : GATE Academy

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What are the three factors a niche includes?

Habitat, ecology, food

Habitat, food chain, oxygen cycle

Food, Nonliving conditions, behavior

Food, competition, energy pyramid

What may result when the environment becomes unfavourable to the organisms?

I: The organisms may die.
II: The organisms may adapt.
III: The organisms may move to another place.

I and III

II and III

I, II and III

I and II

Sustainable practices are activities that can be carried on for years and years without using up all the resources in an area. A community needs food every year, and a sustainable farm can produce crops every year for that community. Why is it important to use land in a sustainable way?

It helps save crops and food for future use.

It helps a farmer make more money the first year.

It helps a community grow more crops every year.

It helps conserve land resources for future use.

Tectonic plates may move because of convection currents that occur in the mantle. What is convection?

The transfer of energy as earthquake waves.

The transfer of energy through materials in direct contact.

The process that breaks down rocks.

The transfer of energy due to the movement of matter.

The use of plastic materials adds to the pollution of the environment. Which of the following statements explain it?

I: They take a very long time to decompose.
II: They are produced from natural resources.
III: They are waterproof.
IV: They produce harmful gases when burnt.

I and IV

III and IV

II and III

I and III

Which of the following is an example of an ecosystem?

Grass, trees, bushes, and flowers

Air, water, grass, badgers

Hawks, mouse, badgers, and eagles

Air, water, sunlight, and soil

An example of a producer is:

Fungus

Water Lily

Bird

Caterpillar

Which of the following would be considered a natural resource?

Concrete

Rock

Steel

Plastic

Kelly disposed off some clear liquid chemicals into a lake. Which of the following would be observed in the pond community?

I: A smell could be detected from the lake.
II: The water in the lake was stagnant.
III: Dead fishes can be seen floating on the surface of the lake.
IV: Leaves of plants growing by the lake turned brown.

I, II, and IV only

I, II, and III only

I, III, and IV only

I and II only

10.

Insecticides and weedkillers will cause no harm to marine life.

false

true

11.

Water pollution can affect the ability of organisms to survive. Which of these statements is true regarding the chemical pollution of water?

Chemical pollutants are harmful only if present in very high concentrations.

Chemical pollution is not regulated

Chemical pollutants can come from both point-sources and nonpoint-sources.

Only a few chemicals dissolve in water.

12.

A dam that is often used to produce electric power.

Which of these terms best describes the role of water in this power system?

A material resource

An energy resource

A nonrenewable resource

A created resource

13.

Which human activity will most likely have a negative impact on global stability?

Increasing recycling programs

Decreasing water pollution levels

Decreasing habitat destruction

Increasing world population growth

14.

Which of these food chains is in the correct order?

Snake, frog, caterpillar, water lily

Water lily, frog, caterpillar, snake

Water lily, caterpillar, frog, snake

Caterpillar, water lily, frog, snake

15.

Many years ago, a volcanic eruption killed many plants and animals on an island. Today the island looks much as it did before the eruption. Which statement is the best possibly explanation for this?

Destroyed environments can recover as a result of the process of ecological succession

Geographic barriers prevent the migration of animals to island habitats

Destroyed ecosystems always return to their original state

Altered ecosystems regain stability through the evolution of new plant species

16.

A fungus is an example of:

An autotroph

A saprophyte

An omnivore

An herbivore

17.

One job that many governments have is stewardship of Earth's resources. Stewardship is the careful and responsible management of a resource. Why is stewardship of Earth's resources important?

It prevents people from using resources.

It keeps governments stable.

It ensures that resources will not be polluted or used up too quickly.

It gives people the opportunity to vote.

18.

Which of the following activities does not have a negative impact on the environment?

Increasing the use of chlorofluorocarbons

Using weedkillers for farming

Burning of fossil fuels

Planting trees in a nature reserve

19.

Millions of automobiles are on roads around the world every day. The image below shows one effect of car travel.

The rear of a car, with smoke coming out of its exhaust pipe.

What does the image best illustrate?

Acid precipitation

Air pollution

Urbanization

Global warming

20.

Which of the following are non-biodegradable materials?

I: Wood
II: Plastics
III:Styrofoam box
IV: Prawn shell

II, III, and IV only

I and II only

I, II, III, and IV

II and III only

21.

One biotic factors that limits the carrying capacity of any habitat is

Activity of decomposers

Amount of soil erosion

The availability of water

Level of atmospheric oxygen

22.

What are the three types of symbiotic relationships between organisms?

All of the above is true

Mutualism, commensalism, parasitism

Mutualism, competition, predation

Symbiosis, commercialism, paralysis

23.

Two closely related species of birds live in the same tree. Species A feeds on ants and termites, while Species B feeds on caterpillars. The two species coexist successfully because

They interbreed

They use different methods of reproduction

Each occupies a different niche

They live in different habitats

24.

Several factors can lead to soil erosion. Which of these human activities is most likely to contribute to soil erosion?

Clearing land for farming

Designating land as a wildlife habitat

Reducing the amount of livestock in an area

Planting trees and vegetation

25.

The burning of fossil fuels can lead to acid precipitation. What do fossil fuels generate that is needed to form acid precipitation?

Energy

Water

Gas pollutants

Particulate pollutants

1 out of 25

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Human Influences on Ecosystems(Senior Class Biology Study by Topics)

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