BioA HONORS Final Tri1 2020-2021 P1 Ext Time

The variable in an experiment that is changed/manipulated by the scientist and is different between the groups in your experiment.

• dependent variable

• independent variable

• data

• control group

What is the dependent variable in this hypothesis:

If toxic waste is dumped into the lake, then the fish population will decrease.

• Toxic waste being dumped

• The size of the fish population

• the lake

• the species of fish

What is the purpose of the control group in an experiment?

• To make an observation

• To change the hypothesis

• To compare to the experimental group

• to give a positive result

What is the Independent variable in this prediction:

If plants are watered, then the height of the plant will increase.

• The increased height of the plant

• The plants being watered

• The type of plant

• The amount of sunlight

A scientist is testing which flavor of ice cream melts the fastest. Which would be a controlled variables/ constant?

• The flavor of ice cream

• all of the choices are correct

• the size of the scoop

• the time it takes to melt

What is the carrying capacity of the population based on the graph?

• 20

• 40

• 80

• 100

If you increased the amount of grass what would happen to the other species in the food web?

• All populations would decrease
• All populations would increase
• No change in population
• Only rabbits, mouse, and grasshopper populations would increase

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A tick sucking blood from a human is what type of relationship?

• Commensalism

• Parasitism

• Mutualism

• competition

An organism that produces its own food supply from inorganic compounds is called a(an)

• heterotroph
• consumer
• detritivore
• autotroph

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

What is the original source of energy in most ecosystems?

• carbohydrates

• sunlight

• water

• carbon

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6