6.12ef

Ecosystem is the level of organization that is best described as including -

• only a single individual of a single species plant or animal.

• two species that live in the same habitat and depend on each other.

• all of the abiotic factors which characterize a geographic area.

• various species in an area and the abiotic factors on which they depend.

Tags

NGSS.MS-LS2-3

Which of the following describes an interaction between a biotic factor and an abiotic factor?

• a pair of birds build a nest in a tree

• a black bear uses a cave for a winter home

• a squirrel gathers nuts to store for winter

• a vulture eats the remains of a wild pig

Tags

NGSS.MS-LS2-3

The following lists levels of organization in an ecosystem from least complex to most complex. Which of the following belongs in the list where the question mark is?

organism

?

community

ecosystem

• species

• population

• class

• society

Meat-eating desert reptiles depend on which of the following biotic factors to supply their needs?

• daytime temperature ranges above 30 degrees Celsius

• condensation of moisture on plants for drinking water

• small animals in their habitat on which they feed

• plants that bear fruits during the summer months

Tags

NGSS.MS-LS2-1

List the steps of the scientific method

d

e

f

c

b

a

Conduct experiment

Ask a question

Form a hypothesis

Communicate results

Draw conclusions

Analyze results

Tags

NGSS.HS-PS1-3

NGSS.HS-PS3-4

Which of the following best describes a population?

• all the organisms of a certain species in a given area

• all the organisms in a habitat that compete for resources

• one individual and all the organisms on which it depends

• all of the living organisms which can be found in an area

Tags

NGSS.MS-LS4-4

Which of the following lists includes only abiotic factors?

• plants, animals, average daily temperature

• rainfall amounts, average daily temperature, minerals in soil

• minerals in soil, plants, rainfall amounts

• animals, rainfall amounts, soil composition

What is the lowest level of organization of the bioshpere, or the one that has the fewest members?

• ecosystem

• population

• community

• organism

Which of the following is a description of an abiotic factor that makes up part of a desert habitat?

• sparse growth of cottonwood trees

• extremes of day and night temperatures

• few large predators, such as coyotes

• leafless, waxy-coated plant with sharp spines

A macaw is a type of parrot with colorful feathers that flies about in the upper canopy of trees in tropical rainforests. Macaws have a diet which inclludes fruits,leaves, nuts, and seeds of plants. Which of the following describes a biotic factor of the macaw's habitat that provides a survival advantage for these birds?

• the colorful feathers are lost and regrow each year

• some rainforest predators are able to climb trees

• trees provide shelter and abundant food supplies

• during some periods, rain falls nearly every day

Tags

NGSS.MS-LS2-1