Ecology Unit Test: Question Preview (ID: 4149)


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Which of the following is a biotic factor in an ecosystem?
a) Water b) trees c) sunlight d) soil
The place organisms live that provide all their basic needs
a) Habitat b) Population c) Community d) Ecosystem
The smallest unit of organization in an ecosystem
a) Population b) Ecosystem c) Organism d) Community
Which of the following is an example of a population?
a) All the animals in an ecosystem b) all the kinds of trees in a forest c) The mule deer in a forest d) The Rocks in a field
A way to estimate populations by counting the organisms in a small area and multiplying
a) Mark & Recapture b) Sampling c) Population Density d) Direct Observation
Most individuals are added to a population by ______________________.
a) Sampling b) Immigration c) Mark & Recapture d) Birth of offspring
When a herd of animals leave an area to look for better food sources
a) Emigration b) Increasing birth rate c) Immigration d) Decreasing death rate
An organism\'s role in its ecosystem
a) Carrying capacity b) Competition c) Niche d) Ecosystem
Behaviors & physical characteristics that make survival possible
a) Habitats b) Adaptations c) Biotic Factors d) Limiting Factors
The struggle for survival with limited resources
a) Competition b) Symbiosis c) Parasitism d) Predation
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