Chapter 1 - Ecology

A place where an organism lives and that provides the things the organism needs is called its _______________________.

• Niche

• Habitat

• Biotic Factor

• Host

The nonliving parts of an ecostem are called _________________.

• Biotic Factors

• Populations

• Abiotic Factors

• Environment

This is an example of an abiotic factor.

• Squirrel

• Pine Tree

• Grass

• Rock

A group of organisms that are physically similar and can reproduce with each other to produce fertie offspinrg.

• Species

• Communitiy

• Ecosystem

• Biotic Factors

List the levels of organization in an ecosytem from the smallest level to the largest level.

• community, biosphere, organism, population, ecosystem

• organism, biosphere, population, ecosystem, community

• organism, population, community, ecosystem, biosphere

• population, organism, ecosystem, community, biosphere

What do you call estimating a population size based on the signs of an organism rather than seeing the organism itself. Examples include looking at animal tracks, and bird nests.

• Direct Observation

• Sampling

• Indirect Observation

• Mark and Recapture

What method of estimating populations sizes involves counting the number of organisms in a small area and then multiplying to find the number of organisms in the larger area?

• Direct Observation

• Indirect Observation

• Sampling

• Mark and Recapture

What term means leaving a population?

• Immigration

• Emigration

• Birth Rate

• Extinction

Which of the following is not a limiting factor of an environment

• Food

• Space

• Weather

• Immigration

What are the behaviors and physical characteristics of species that allow them to live successfully in their environment?

• Adaptations

• Competition

• Niche

• Commensalism