Ecosystem

Which abiotic component refers to an edaphic factor?

• altitude

• rainfall

• soil

• wind

Which biotic component cannot make its own food?

• thermoacidophile

• methanogen

• fungus

• alga

Which abiotic component is described as the gradient of a particular surface of the Earth?

• altitude

• aspect

• geography

• slope

Which term is defined as the role of an organism in an ecosystem?

• heterotroph

• autotroph

• habitat

• niche

Which organisms exhibit mutualism?

• snake and frog

• tree and fern

• hyenas and vultures

• aphids and ants

Which organisms exhibit true symbiosis?

• human and mosquito

• butterfly and bee

• orchid and tree

• clown fish and sea anemone

Which statement describes competition?

• Both organisms benefit from the relationhip.

• Both organisms struggle for food and/or territory.

• The weaker organism harms the bigger organism.

• The stronger organism kills the weaker organism.

What is the maximum number of organisms involved in a food chain?

• 3

• 4

• 5

• 6

Why is a food web more advantageous than a food chain?

• It shows that pathway of energy.

• It shows the complex pattern of relationship.

• More than one food source is available for one consumer.

• The linear flow of energy is clearly demonstrated by the food web.

In an energy pyramid, what occupies the basal trophic level?

• primary consumer

• top consumer

• decomposer

• producer