Diversity & Interdependence

The picture shows an internal structure of a flower.

Which sentence about the structure is correct?

• It is a stoma and will make food.

• It is an ovary and will make eggs.

• It is a chloroplast and gets carbon dioxide.

• It is a vein and it carries oxygen.

Plant structures including leaves, stem, and roots are classified and what kind of structures?

• They are external structures.

• They are internal structures.

• They are vascular structures.

• They are reproductive structures.

Which sentence correctly describes how a plant reproduces?

• Pollen made by the petals goes to the sepal.

• The pistil receives petals from the sepal.

• Pollen from the stamen goes to the pistil.

• The stamen makes pollen that goes to the petals.

Which sentence about the structure pictured is correct?

• It keeps the animal in balance as it moves.

• It provides a rigid support system.

• It will pump blood to all body parts.

• It brings oxygen into the animal's body.

Tags

NGSS.MS-LS1-3

This organ can be found in the human head.

 

Which sentence correctly describes one function of this organ?

• It helps the animal make its own food.

• It exchanges gases for the animal.

• It pumps blood around the body for the animal.

• It helps control movements for the animal.

What is the best explanation for a decrease in a population of wolves in an area?

• the amount of food decreases

• the amount of space increases

• the amount of food increases

• the amount of competition decreases

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

Which event would cause an ecosystem to change quickly?

• a climate change

• a lake drying up

• an earthquake

• a pond becoming a marsh

Tags

NGSS.MS-LS2-4

What is the advantage of seeds that can be spread over a wide area?

• They may have more competition.

•  They may have less competition for resources.

• They are more likely to start growing.

• They are more likely to develop useful mutations.

 What is a change in a gene called?

• an adaptation

• a physical characteristic

• a behavioral characteristic

• a mutation

Tags

NGSS.MS-LS3-1

Which of the following statements is true about succession?

• It is unpredictable.

• It follows change.

• It requires constant conditions.

• It results in unstable communities.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-3