Ecology Test

What is a population?

• One individual member of a species

• a group of individuals of the same species that live in the same area

• a community of different species and their environment

Which definition best fits the term BIOTIC?

• The study of the interactions between animals and their environment

• Factors in the environment that are considered not alive

• Factors in the environment that are considered living or the remains of living things

One species benefits, the other is unaffected

• symbiosis

• parasitism

• mutualism

• commensalism

Tapeworms reside in human intestine and take nutrients from the human

• symbiosis

• parasitism

• mutualism

• commensalism

An organism that helps to recycle nutrients within an ecosystem by eating dead or decaying organisms is a:

• Predator

• Autotroph

• Producer

• Decomposer

The ecological role an organism performs in their specific environment is considered the organism's...

• Habitat

• Population

• Biome

• Niche

The arrows in a food chain or web represents what?

• They point to the organism that is being eaten.

• It shows how sunlight flows within an ecosystem.

• They show what direction the energy is flowing between organisms. 

• They represent how water is transferred within a habitat.

What are plants called in a food chain?

• Producers /Autotrophs

• Consumers /Heterotrophs

• Decomposers

• Scavengers

Where does the energy start in this food chain?

• Plant
• Sun
• Deer
• Wolf

Why might an organism have more than one arrow coming FROM them in a food web?

• More than one organism may eat them.

• They may eat more than one other organism.

• This organism gets its energy from multiple sources.