6.13 ANALYSIS: Aquatic Interactions Lab

Which test tubes show the process of photosynthesis? How do you know?

• Test tubes 2, 3, and 7 with plants in the light show photosynthesis because they produce glucose and oxygen and absorb carbon dioxide.

• Test tubes 5 and 6 with plants kept in the dark show photosynthesis because the gas levels do not change.

• Test tubes without plants show photosynthesis because the water changes color.

• Test tubes with plants exposed to light show photosynthesis because they absorb nitrogen and release carbon dioxide.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which test tubes show the process of cellular respiration? How do you know?

• The test tubes with living organisms (plants, animals, or both) show cellular respiration because they produce energy and release carbon dioxide.

• The test tubes with only plants show cellular respiration because they produce oxygen.

• The test tubes with only snails show cellular respiration because they are the ones that exhale CO2.

• The test tubes with only air show cellular respiration because the air contains oxygen.

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NGSS.MS-LS2-3

If we took test tube 3 and put it in the dark, what could happen to the color of the BTB over time? Why?

• The BTB would turn yellow because photosynthesis would stop and only respiration would occur, increasing CO2.

• The BTB would remain blue because photosynthesis would continue in the dark.

• The BTB would turn green because chlorophyll would be produced in the dark.

• The BTB would turn orange because oxygen levels would increase in the dark.

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NGSS.MS-LS1-6

Which test tubes show a producer and a primary consumer?

• Test tubes that contain plants (producers) and animals (primary consumers).

• Test tubes that contain only plants.

• Test tubes that contain only animals.

• Test tubes that do not contain either plants or animals.

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NGSS.MS-LS2-2

Energy flows through the 'mini ecosystem' in test tube 3 by:

• The producers (plants) capture sunlight and the consumers (snails) feed on the producers

• The consumers (snails) capture sunlight directly and transfer it to the producers (plants).

• The decomposers produce energy for producers and consumers.

• Energy is created and destroyed within the ecosystem.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Carbon is cycling through the 'mini ecosystem' in test tube 3 by:

• Plants absorb CO2 from the environment and photosynthesize, producing glucose that consumers eat, generating energy and exhaling CO2

• Snails can absorb the CO2 produced by plants and then cycle it through the environment via cellular respiration

• Plants absorb energy from the sun, then the energy is transferred to the snail when it eats

• It does not cycle at all, it flows

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which two chemical reactions in an ecosystem help with the carbon cycle and the flow of energy?

• Photosynthesis and Cellular Respiration

• Photosynthesis and Fermentation

• Cellular Respiration and Combustion

• Fermentation and Combustion

Tags

NGSS.MS-LS1-6