Biology Sol Experimental Design

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, what are the controlled variables?

• Type of plant, amount of music, and sunlight
• Water, apple juice, milk
• Plant growth

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

 Which data point on the graph is probably invalid?

• 1
• 2
• 3
• 4

Jan consistently read the volume of liquids as shown. How would this practice impact her work?

• Her measurements would be too low for less dense liquids.
• Her measurements would be too high.
• Her measurements would be very accurate.
• Her measurements would lack precision.

Which variable appears to control leaf production in these plants?

• the temperature
• the relative humidity
• the amount of water
• the number of daylight hours

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Orchids were studied to determine if the amount of humidity affected the flowering of these plants. Which of these was the independent variable in this study?

• the amount watered
• the percentage of humidity
• the number of flowers on each plant
• the length of time required for flowering

The data show the growth of two bean plants over several weeks using four different fertilizers. The experimental data would be more valid if which of the following variables was included in the experiment?

• The plants were grown at variable temperatures.
• A fifth fertilizer was tested.
• A control without fertilizer was included for each plant.
• Only one plant was tested.

Tags

NGSS.MS-LS1-5

What is happening to the temperature in New York City?

• It is remaining about the same.

• It is mostly decreasing.

• It is mostly increasing.

• There is a pattern of increasing and decreasing.

The dependent variable in this experiment is - 

• Number of Bacteria
• Time of Incubation
• Culture Number
• Type of Bacteria

What can you infer about the temperature for E.coli bacterial growth?

• E. coli does not grow well at low and high temperatures.
• E coli will continue to grow at very high temperatures.
• E.coli grows best at very low temperatures
• E.coli grows best at very high temperatures.

Tags

NGSS.MS-LS1-5

Which type of air pollutant is the most abundant?

• carbon monoxide

• particulate matter

• nitrogen oxides

• sulfur oxides