Ecosystem and Community Dynamics Quiz

A symbiotic relationship where 2 or more organism benefit is called-

• parasitism

• commensalism

• mutualism

• symbiosis

Fungi is an example of a(n)-

• scavenger

• autotroph

• heterotroph

• decomposer

What type of succession occurs after a natural process such as fire or flood?

• primary succession

• secondary succession

• old field succession

• climax community

What is the primary energy source for all living things on the surface of Earth?

• plants

• water

• the sun

• heat from Earth's mantle

Energy pyramids are broader at the base and narrow at the apex, as energy-

• decreases along the food chain

• increases along the food chain

• remains the same along the food chain

• may increase or decrease

What type of vegetation would you expect to find on newly formed volcanic islands?

• short grasses

• shrubs

• young trees

• lichens

What are organisms that eat both plants and animals called?

• herbivore

• carnivore

• autotroph

• omnivore

When a top predator or primary produce is removed from an ecosystem, we can see changes throughout the ecosystem. This is called-

• ecological problem effect

• decreasing energy effect

• ecological cascade effect

• increasing energy effect

What do arrows on a food web represent?

• which organisms are autotrophs

• Which organisms eat each other

• the flow of water through the food web

• the flow of energy through the food web

Living or dead (once living ) organisms

• abiotic factors

• biotic factors

• species

• niche