Which of the following is a biotic factor in the prairie ecosystem?
The place where an organism lives and that provides the things the organism needs is called its
The smallest unit of ecological organization is a single
Which of the following is an example of a population?
The largest population that an environment can support is called its
An organism’s particular role in its habitat, or how it makes its living, is called its
The behaviors and physical characteristics of species that allow them to live successfully in their environment are called
The struggle between organisms to survive in a habitat with limited resources is called
When a jellyfish paralyzes a tiny fish with its poisonous tentacles, the fish is the
A close relationship between two species that benefits at least one of the species is called
An early winter frost preventing further growth in a tomato garden is an example of
All of the following are examples of limiting factors EXCEPT
The nonliving parts of an ecosystem are called
Which of the following describes an interaction in which one organism kills and eats another?
All the different populations that live together in an area make up a(an)
The study of how things interact with each other and with their environment is called
When a flea is living on a dog, the dog is the
Mutualism, commensalism, and parasitism are the three types of
A hawk building its nest on an arm of a saguaro cactus is an example of
Consumers that eat both plants and animals are called
An organism that can make its own food is called a
Vultures, which feed on the bodies of dead organisms, are
Indicate whether the statement is true or false. If false, change the underlined word or phrase to make the statement true.
Both species benefit in the type of symbiosis called mutualism.
Indicate whether the statement is true or false. If false, change the underlined word or phrase to make the statement true.
A tapeworm living inside a wolf’s body is a predator.
Indicate whether the statement is true or false. If false, change the underlined word or phrase to make the statement true.
All of the members of a community belong to the same species.
Indicate whether the statement is true or false. If false, change the underlined word or phrase to make the statement true.
Bees and flowers are biotic factors in an ecosystem.
Indicate whether the statement is true or false. If false, change the underlined word or phrase to make the statement true.
Population size generally increases if the birth rate is greater than the death rate.
Classify these examples of symbiosis by type and explain your choice. Use details about each organism and use complete sentences. :
Inside a human’s intestine live bacteria that make vitamin K;
Classify these examples of symbiosis by type and explain your choice. Use details about each organism and use complete sentences.
A human picks up bacteria on his or her hands. The bacteria do not cause disease but do feed on the human’s dead skin cells;
Classify these examples of symbiosis by type and explain your choice. Use details about each organism and use complete sentences.
A tick attaches itself to a human and feeds on the human’s blood.
Which biome is described below?
Warm summers, cold winters; receives at least 50 cm of precipitation per year; trees shed their leaves and grow new ones each year
Which biome is described below?
Warm, rainy summers; very cold winters with heavy snow; trees produce cones with seeds that are eaten by many animals
Which biome is described below?
Extremely cold winters, warmer summers; windy; very dry; no trees, only low-growing plants
Which biome is described below?
Receives between 25 and 75 centimeters of rain each year; populated by grasses and many large herbivores
This is the largest biome in the world, covering 70% of the earth.
What biome has the greatest biodiversity?
Which biome is described below?
Hot in daytime, cool or cold at night; very dry; organisms are adapted to extreme temperatures and dry conditions
One characteristic feature of tundra is that only the surface thaws in the summer and refreezes in the winter, leaving a layer of permanently frozen subsoil. This characteristic is known as
Which biome is charaterized by very low temperatures, little precipitation, and permafrost?
In which biome would you find most likely find many animals with white fur?
Which of the following biomes receives the most precipitation?