Introduction in Biology Test

Stomata’s are small openings present on plant leaves. On a hot dry day the stomatal openings remain closed to reduce the loss of water. Which characteristic of living things is described here?

• Reproduction

• Homeostasis

• Development

• Transfer of Energy

• Fuel

A beech tree uses photosynthesis to change light energy into sugar and convert this into usable energy.

• Reproduction

• Homeostasis

• Fuel or Food

• Growth

• Response to Stimuli

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

It is observed that our body temperature rises during physical exercise. But the temperature is controlled by the body through sweating. Choose the Correct 3 answers

• Reproduction

• Homeostasis

• Adaptation

• Transfer of Energy

• Response to Stimuli

A newborn elephant gradually increases in size and weight, developing stronger muscles and larger tusks as it matures into an adult. Which characteristics of life is shown?

• Growth

• Homeostasis

• Adaptation

• Transfer of Energy

• Response to Stimuli

Tags

NGSS.MS-LS1-5

You design an experiment to test the effectiveness of commercial fertilizers. You plant 4 tomato seeds. One seed you plant in regular potting soil. The other three you plant in potting soil each with a different type of commercial fertilizer. You water and keep it under light the same amount. You measure each plant every day after it germinates to record the height. You do this every day for a month.

 

Which of the following is the dependent variable in this experiment?

• The plant in the potting soil        

• The soil type

• Height of the Plant

• Plants in different types of fertilizer

Tags

NGSS.MS-LS1-5

You design an experiment to test the effectiveness of commercial fertilizers. You plant 4 tomato seeds. One seed you plant in regular potting soil. The other three you plant in potting soil each with a different type of commercial fertilizer. You water and keep it under light the same amount. You measure each plant every day after it germinates to record the height. You do this every day for a month.

Which of the following is the control (group) in this experiment?

• The plant in the potting soil        

• The soil type

• Height of the Plant

• One of the Plants in different types of fertilizer

Tags

NGSS.MS-LS1-5

You design an experiment to test the effectiveness of commercial fertilizers. You plant 4 tomato seeds. One seed you plant in regular potting soil. The other three you plant in potting soil each with a different type of commercial fertilizer. You water and keep it under light the same amount. You measure each plant every day after it germinates to record the height. You do this every day for a month.

 

Which of the following is the independent variable in this experiment??

• The plant in the potting soil        

• The soil type

• Height of the Plant

• Different types of fertilizer

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

You water three sunflower plants with salt water.  Each plant receives a different concentration of salt solutions.  A fourth plant receives pure water.  After a two week period, the height is measured.  The independent variable is the:

• Height                           

• Type of Salt

• Concentration of Salt solutions

• Sunflowers

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

In an experiment, the item that is changed by the researcher is the ______ variable and the responding factor that is measured is the _______variable.

• controlled, common     

• dependent, independent

• independent, dependent

• controlled, uncontrolled

Research Question: Does the type of gasoline put in a car effect how fast the car can drive. What is the independent variable?

• Type of gasoline
• which car the gas is put into
• how fast the car can drive
• how much gas is put into the car

Tags

NGSS.MS-PS3-1