Section 1A - What is biodiversity?

1. Which of the following best describes biodiversity?

• the variety of organisms in a given area.

• the number of individuals in a given area.

• the total number of animals in an area

• the number of different types of animals in an area

Tags

NGSS.MS-LS2-5

Most biologists are confident that at least ____________ million species exist on Earth.

• 1

• 2

• 10

• 30

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NGSS.HS-LS4-5

Which of the following groups of organisms includes the greatest number of species?

• plants

• fungi

• insects

• crustaceans

Which of the following is not a level of biodiversity?

• ecosystem diversity

• absolute diversity

• species diversity

• genetic diversity

Some species are so important to the functioning of an ecosystem that they are called:

• threatened species

• keystone species

• endangered species

• extinct species

Tags

NGSS.MS-LS2-2

When sea otters disappeared from the Pacific coast of North America,

• the area became overrun with kelp.

• the number of fish in the kelp beds increased.

• the number of sea urchins in the kelp beds increased.

• the area became overrun with brown seaweed.

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NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Tourist experiences among unique wildlife and ecosystems. This is known as ____________.

• hybrids

• biodiveristy

• ecotourism

• genetic diversity

Tags

NGSS.MS-LS2-5

How do people benefit from biodiversity?

• aesthetic or personal enjoyment

• source of new products

• variety of food sources

• all of the above

. All the different genes contained in all members of a population shows ____________________.

• hybrids

• genetic diversity

• ecotourism

• biodiversity

Tags

NGSS.MS-LS3-2

NGSS.MS-LS4-4

Why are there so many species still unknown to modern science?

• Many of these species are found in remote environments.

• Smaller species receive less attention than large organisms

• Cataloging these species is a huge task.

• all of the above