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Unit 2 Test/Quiz
Terms in this set (70)
Is the scientific study of interactions among organisms and their environment
Is the portion of Earth that supports life
The non-livings parts of an organism`s environment
All the living organisms that inhabit an environment
Is a group of organisms of one species that interbreed and live in the same place at the same time
Is a collection of interacting populations
Is made up the interactions among the population in a community and the community`s physical surroundings, or abiotic factors
Is the place where an organism lives outs its life
Is the role and position a species has in its environment - how it meets its need for food and shelter, how its survive, and how it reproduces
The relationship in which there is a close and permanent association among organisms of different species, means "living together"
Is a symbiotic relationship in which one species benefits and the other species neither harmed nor benefited
A symbiotic relationship in which both species benefit
A symbiotic relationship in which one organism derives benefit at the expense of the other
Organisms that used energy from the sun or energy stored in chemicals compounds to manufacture their own nutrients.
Organisms that cannot make their own food and must feed on other organism.
Black vultures feed on carrion and refuse and play a beneficial role in the ecosystem.
Organisms that are such as fungi, break down and absorb nutrients from dead organisms, they break down the complex compounds of dead and decaying plants and animals into simpler molecules that can be easier absorbed by the decomposer and by other organisms.
A simple model that scientists use use to show how matter and energy moves through an ecosystem.
The model they create, that expresses all the possible feeding relationships at each trophic level in a community.
Where an organism in a food chain represents a feeding step.
are organisms only eat plants
organisms that eat plants mostly fruits
organisms that eat meat
Any abiotic or biotic factor that restricts the existence, numbers, reproduction, or distribution of organisms.
When natural changes and species replacements that take place in the communities of an ecosystem.
The colonization of new sites like these by communities of organism.
A stable, mature community that undergoes little or no change in species.
Refers to the sequence of community changes that take place after a community is disrupted by natural disasters or human actions.
Is a large group of ecosystems that share the same type of climax community.
The portion of the marine biome that is shallow enough for sunlight to penetrate.
Deeper water that never receives sunlight.
Is a coastal body of water, partially surrounded by land, in which fresh water and saltwater mix.
The portion of the shoreline that lies between the high and low tide lines.
Means that as a population gets larger, it also grows faster.
number of organisms of one species that an environment can support.
Include disease, competition, parasites, and also feed.
Affect all populations, regardless of their density .
Organisms that live in the marine biome
How much of the world´s surface is covered in water?
What happens when too many species are lost to extinction?
The ecosystem becomes unstable
Does plants and animals depend in each other for survival?
What happens to a natural ecosystem when humans build cities, farm, houses ?
Biodiversity decreases and also the ecosystem changes for human benefited
What does extinction mean?
There is no more species living in Earth
What is the largest ecosystem in Earth?
Water in the lake or a pond normally comes form
precipitation, ground water, river and waterfall
The portion of Earth that supports life is the
Ecology is the scientific study of
Interactions among organisms and their environment
An elk eats grass. A grizzly eats elk. This is an example of
Biotic factors in wetland community might include
Is a place where an organism lives out its live
Parasitism is a type of symbiosis in which
one organism derives benefit at the expense of the other
Organisms that use energy from the sun or energy stored in chemical compounds to manufacture their own nutrients are called
Organisms that cannot make their own food and must feed on other organisms are called
An organism that eats both plants and animals is called
A model that expresses all of the possible feeding relationships at each trophic level of a community is called
A limiting factor in an ecosystem is any abiotic factor or biotic factor that______the existence, numbers, reproduction, or reproduction of organisms.
The type of microscope used in this lab is called a
Humans can cause negative effects to natural biodiversity when they are building houses, buildings, and cities
Abiotic factors are
Biotic factors are
What is the correct order from largest to smaller for the words? community - biosphere - population - organism - ecosystem ?
Organism - population - community - ecosystem - biosphere
What is required in order for an ecosystem to be healthy?
biodiversity, animals, plants
how much of the world´d surface is covered in water?
Which of the following is Not important to indicate the lake health?
the squirrels in the forest nearby
Which is true concerning the flow of energy and matte in an ecosystem?
matter is recycled and used again, energy is lost
A undersea volcano erupts creating a new island off the coast. life slowly starts appearing on the island. What would probably be the first species to grow and surive
Humans are sometimes described as one of the major causes of decreases in biodiversity. Education of humans about biodiversity and preservation is one of the best ways to mantain the biodiversity of the world today
Do you think that ecology is a branch of biology, from natural history?
Which is the name of the first species in area called?
Do you think that oceans contain largest amount of biomass?
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