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biology test chap 4

ecology

QuestionAnswer
the branch of biology dealing with interactions among organisms and between organisms and their environment is called? ecology
The part of earth in which all loving things exist is the? biosphere
All of the members of a particular species that live in one area are called a? population
Which of the following descriptions about the organization of an ecosystem is correct? Species make up populations, which make up communities
The simplest grouping of more than one kind of organism in the biosphere is? community
Populations in a community and the living and nonliving factors with which they interact ecosystem
Green plants are? producers
Which is the original source of almost all the energy in most ecosystems? sunlight
Algae in the beginning of a food chain is the? producer
An organism that cannot make its own food is called a? heterotroph
Organisms that break down and feed on wastes and dead organisms are called? decomposers
What is an organism that feeds only on plants called? herbivore
What animals eat both producers and consumers? omnivores
What is the term for each step in the transfer of energy and matter within a biological community? trophic level
All the interconnected feeding relationships in an ecosystem make up a food? web
A bird stalks, kills, then eats an insect. Based on its behavior, which ecological terms describe the bird? Carnivore, consumer
Each of the following is an abiotic factor in the environment EXCEPT Plant life
An Organisms niche is the way the organism uses the range of physical and biological conditions in which it lives
An interaction in which one organism captures and feeds on another organism is called a? predator
A symbiosis in which both species benefit is mutualism
The symbiotic relationship between a flower and the insect that feeds on its nectar is an example of? mutualism because the flower provides the insect with food, and the insect pollinates the flower
The sequence of energy flow through a food chain is? producers; primary consumers; higher order consumers
In terrestrial ecosystem, the trophic level that would contain the largest biomass would be the? producers
what organisms below would be considered secondary consumers? ducks and mice
Created by: mcnmode