Ohio HS Science State Test Practice #2

Parent 1 has brown eyes. Her genotype is AA. Parent 2 has blue eyes. His genotype is aa. Here is a Punnett square showing the possible genotypes of their offspring. Which sentence describes the eye color that the offspring will have?

• All of the offspring will have blue eyes.

• Half of the offspring will have brown eyes.

• All of the offspring will have brown eyes.

Water flows through openings in the dam down to a river below. Energy is produced as the water flows downward. What do dams use flowing water to produce?

• fire

• electricity

• oil

Which car uses a renewable energy source?

• Gasoline

• Solar

Here is a table that describes traits of a lungfish and its ancestor. Which trait is the most recent evolutionary change from the common ancestor?

• fins

• jaws

• bony ribs

The sun is in the Milky Way galaxy. How many other stars are in the Milky Way galaxy?

• a few other stars

• many other stars

Jacob has two pet cats with spots on their fur. The genotype of the first cat is BB. The genotype of the second cat is Bb. These two cats have kittens. Jacob wants to know the possibility of the kittens having spots on their fur. Here is the Punnett square that he draws.

What is the possibility of the kittens having spots on their fur?

• All of the kittens will have spots on their fur.

• Half of the kittens will have spots on their fur.

• None of the kittens will have spots on their fur.

Burning coal causes air pollution. Which substance causes the air pollution?

• steam

• smoke

Which way would rain water flow on this hill?

• from top to bottom

• from bottom to bottom

• from bottom to top

What will most likely happen to the number of brown bears?

• It will increase.

• It will decrease.

• It will stay the same.

Here are two maps of Ohio. In 1880, almost all of the land in Ohio was used for farming. Very little land was forest or other uses. In 2007, less than half of the land in Ohio was used for farming.

How has the decrease in farming changed the land use in Ohio over time?

• There is more forest area.

• There is less forest area.

• There is the same amount of forest area.