What is the purpose of a dichotomous key?

• to find a common ancestor
• to show the evolution of organisms
• to show relationships between organisms
• to identify organisms

A fish was caught that has a skinny body and rounded fins. Using the dichotomous key provided , which fish is this?

• Eel

• Cornet Fish

• Puffer Fish

• Flounder

Which of the following paired statements could be used to know the difference between Bird A and Bird C shown on a dichotomous key?

• Head is dark-colored; Head is light-colored

• Beak is Dark-colored ; beak is light colored

• Beak is straight, Beak is curved

• Feathers are light colored; feathers are dark colored

Tags

NGSS.MS-LS4-2

A living or once-living organisms in an ecosystem is a

• population
• biotic factor
• abiotic factor
• community

Tags

NGSS.MS-LS1-1

Which of the following is not an abiotic factor?

• sun
• temperature
• soil
• grass

Each biome has unique abiotic factors. The two main factors that determine where organisms live are

• Food Source and land scape

• Climate and Water availability

• Food source and water availability

• Climate and landscape

Tags

NGSS.MS-LS1-5

The tropical rain forest, the desert, and the tundra are all examples of ...

• the biopshere.

• biomes.

• ecosystems.

• communities.

Plants and animals in the tundra must be able to adapt to the extremely ___________ weather

• small

• cold

• perennials

• shallow

Tags

NGSS.MS-LS1-5

Which of the following organisms are likely to be found in a snowy tundra?

• Artic Fox

• Anaconda

• Cactus

• Humpback Whale

What are the possible consequences to introducing a non native species into an ecosystem?

• The health of the ecosystem declines

• the organism can take over.

• The biodiversity decreases

• all the above

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

NGSS.MS-LS2-5