HMH Unit 1: Living Systems

Barnacles are animals that cannot move. In order to get food, they attach to whales and catch any floating plankton in the water. The whale is neither helped nor harmed in the interaction. What type of symbiosis is this? (a)  

• Mutualism
• Commensalism
• Parasitism
• Neutralism

In the wild, some alligators get their teeth cleaned by birds. The birds gets their food from the alligators' teeth. (a)  

• Mutualism
• Commensalism
• Parasitism
• Neutralism

In this photo, what is an abiotic factor? (a)  

• rain
• Deer
• Grass

What is this picture describing?

• It is describing the habitat of the bird

• It is describing direct competition between flamingos and ducks.

• It is describing abiotic factors of the forest

• It is describing the niche of each bird.

Tags

NGSS.MS-LS2-1

Which statement is true of the many parts of the biosphere?

• Each part includes salt water.

• Each part is completely unique.

• Each part is isolated from the others.

• Each part is connected to all the others.

Tags

NGSS.MS-LS2-2

On a construction site, a worker moves some debris and a bulldozer moves a different pile of debris. Which of these best explains how the worker and the bulldozer are alike?

• Their physical properties are similar.

• They are both systems that are performing similar functions.

• They both use the same kind of fuel to provide them with energy.

• They have control centers that made from the same components.

What is an organized group of related parts that interact to form a whole? (a)  

• theory
• system
• adaptation
• arrangement

Which of these best explains the organization of the biosphere?

• Groups of biomes make up a community, and groups of communities make up an ecosystem

• Groups of communities make up a population, and groups of populations make up a biome.

• Groups of individuals make up populations, and groups of populations make up communities.

• Groups of populations make up an ecosystem, and groups of ecosystems make up a community.

Which of these is an example of a connection between Earth systems?

• ice melting on a lake

• deer drinking from a stream

• a robin hatching from an egg

• minerals forming under Earth's surface

Tags

NGSS.MS-ESS2-4

NGSS.MS-LS2-3

Which of these only lists abiotic components of an ecosystem? (a)  

• river, grass, soil
• rocks, insects, trees
• minerals, water, air
• sand, saltwater, seabirds