Primary Productivity

Which of the following statements defines productivity?

• The mass of living organisms in a given area expressed as dry weight of mass per unit of area or g m–2.

• The conversion of energy into biomass in a given time expressed as J m-2 yr-1.

• The total amount of stuff made.

• What is left over after losses.

Tags

NGSS.MS-LS2-3

Using the graph below which statement is correct.

• Swamps and marshes, estuaries and tropical rainforests have an NPP of 9,000 kilocalories m-2 yr-1.

• Boreal and deciduous temperate forests have a NPP range of 3,500 - 6,000 kilocalories m-2 yr-1.

• Grasslands have an NPP of 2,000 kilocalories m-2 yr-1.

• All of the responses are correct.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-1

__________ primary productivity is the total amount of energy that producers convert to chemical energy in organic molecules per unit of time.   

• Net
• Total
• Gross
• None of the above

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Oxygen is essential to _______________.

• photosynthesis
• glycolysis
• cellular respiration
• fermentation

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

To measure primary productivity, you can measure carbon dioxide consumption, total carbohydrates produced or ________________.

• dissolved oxygen
• total proteins produced
• light energy entering system

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Would salt water or fresh water be expected to have a greater concentration of dissolved oxygen?

• salt water
• fresh water
• they would be equal

Which environment would have a greater amount of dissolved oxygen, warm water (31degrees C) or cool water (18 degrees C)?

• warm
• cool
• they would be the same

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-1

NGSS.MS-LS2-4

__________productivity = the organic materials that remain after photosynthetic organisms in the ecosystem have used some of these compounds for their cellular energy needs (cellular respiration).

• Gross
• Primary
• Net
• Secondary

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Autotrophs

• use photosynthesis.

• are at the top of the food chain.

• are able to survive without oxygen.

• cannot assimilate carbon.

• are primary consumers.

Tags

NGSS.MS-LS1-6

A zebra is an example of

• a primary consumer.

• a producer

• a secondary consumer.

• a detritivore.

• a scavenger