AP Environmental Primary Productivity

What is primary productivity?

• The rate at which producers convert sunlight into chemical energy (glucose) through photosynthesis

• The rate at which animals consume plants

• The rate at which plants absorb water

• The rate at which energy is lost as heat

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Fill in the blank: The first trophic level in an ecosystem is called the _________.

• producers

• consumers

• decomposers

• predators

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NGSS.MS-LS2-3

Which nutrients are especially absorbed via roots and are needed for plant growth but not for photosynthesis?

• Nitrogen and phosphorus

• Glucose and oxygen

• Chlorophyll and sunlight

• Carbon dioxide and water

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NGSS.MS-LS2-1

What is the chemical formula for glucose produced during photosynthesis?

• C6H12O6

• C2H5OH

• CO2

• C12H22O11

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Oxygen (O2) is released through plant tissues such as leaves during photosynthesis.

• True

• False

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following is NOT needed for photosynthesis?

• Sunlight

• Water

• Carbon dioxide

• Nitrogen

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Match the following terms with their definitions:

• Energy stored during photosynthesis

• Energy stored in biomass that can be passed on to primary consumers

• Energy used by plant to live/grow

• Energy used by plant to live/grow

• Energy stored in biomass that can be passed on to primary consumers

• Energy stored during photosynthesis

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NGSS.MS-LS1-6

What is the formula for measuring primary productivity in terms of NPP, GPP, and R?

• NPP = GPP - R

• NPP = R - GPP

• NPP = GPP + R

• NPP = GPP × R

What is the main pigment that allows most producers on land to absorb blue and red wavelengths of sunlight?

• Chlorophyll

• Carotene

• Melanin

• Hemoglobin

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NGSS.MS-LS1-6

A field of grass captures 2,000 kcal/m²/year of energy from the sun through photosynthesis. The grass uses 1,200 kcal/m²/year for cellular respiration. What is the Net Primary Productivity (NPP) of this grassland?

• 800 kcal/m²/year

• 1,200 kcal/m²/year

• 2,000 kcal/m²/year

• 3,200 kcal/m²/year

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3