UNIT 2 ECOSYSTEMS REVIEW

Which is the best description of the biosphere?

• all of the biotic components of Earth

• all of the abiotic components of Earth

• it is only made up of populations on Earth

• it is made up of all the ecosystems on Earth

Which is the most accurate statement about biodiversity?

• Biodiversity is not important in ecosystems

• The lower the biodiversity in an ecosystem, the healthier it is

• The greater the biodiversity in an ecosystem, the less healthy it is

• It refers to the variety of species in an area

Tags

NGSS.MS-LS2-5

Which is the best example of a density-independent factor in an ecosystem?

• predation

• natural disaster

• parasitism

• disease

Tags

NGSS.MS-LS2-4

Which is the best description of an ecosystem?

• Includes only organisms of the same species

• All of the populations on the Earth

• A community of living organisms plus their abiotic surroundings

• A population of living organisms plus their abiotic surroundings

Which is true regarding predator prey relationships?

• It is valuable interaction between two populations in an ecosystem

• Population growth of both predator and prey species is predictable within that ecosystem

• The two populations have an inverse relationship in terms of population growth

• All are true

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Symbiosis is a close association between

• Two different species

• Two of the same species

• Two species of differing ages

• Two species of differing ecosystems

The original source of energy for all living things comes from

• decomposers

• consumers

• producers

• the sun

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

. How do most producers take sunlight energy and convert it into usable energy for themselves and other organisms in a habitat?

• Through the process of metabolism

• Through the process of aerobic respiration

• Through the process of anaerobic respiration

• Through the process of photosynthesis

Tags

NGSS.MS-LS1-6

Populations are best described as

• A group of competing species

• A group of many different species living together

• A group of nonliving organisms

• A group of the same species living together

Which is the best example of an abiotic factor in an ecosystem?

• climate

• trees

• predators

• prey

Tags

NGSS.MS-LS2-3