APES Unit 1&2 Review

Which of the following pathways indicate how nitrogen is added to the largest nitrogen reservoir?

• Nitrifying bacteria and lightning

• Decomposing plant and animal matter

• Denitrifying bacteria and volcanic activity

• Nitrates taken up by plant roots

This biome has the highest net primary productivity, in part because of consistently warm temperatures and abundant sunlight

• Temperate grassland

• Taiga

• Tropical rainforest

• Tundra

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The net primary production of a pine forest on a lava flow on Mount Fuji is about 175,000 kcal/m2/yr and the plant respiration is estimated to be 115,000 kcal/m2/yr. What is the total amount of energy transferred during photosynthesis for this ecosystem?

• 60,000 kcal/m2/yr

• 115,000 kcal/m2/yr

• 175,000 kcal/m2/yr

• 290,000 kcal/m2/yr

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following is true of carbon as it cycles in nature?

• Carbon dioxide is released during photosynthesis

• Carbon compounds rarely exist in the gaseous state

• Carbon sinks include forests and oceans

• The carbon dioxide concentration in the atmosphere is reduced by cutting trees

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-3

Which of the following is a characteristic of tropical rain forests?

• Their soils are relatively poor in nutrients

• They rarely receive more than 100 centimeters of rain per year

• Their soils typically have high pH

• They do not exhibit a great deal of species diversity

Tags

NGSS.MS-LS2-5

In a given ecosystem, producers convert solar energy into 15,000 kcal of chemical energy stored in organic compounds. Which of the following is the most likely amount of energy available to secondary consumers?

• 1.5 kcal

• 150 kcal

• 1,500 kcal

• 15,000 kcal

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

This biome is characterized by long dry seasons and is dominated by grasses, shrubs, and grazing animals

• Savanna

• Boreal forest

• Tropical rain forest

• Desert

Which of the following best helps to explain why phosphorus is often a limiting factor in many ecosystems?

• There is usually a gaseous phase in the phosphorus cycle

• Phosphorus cycles very quickly through environments

• Under many conditions, phosphorus forms stable insoluble compounds

• Phosphate is not readily taken up by plants

The major biological source of dissolved oxygen in the ocean comes from

• Decomposition of organic sediments on the ocean floor

• Metabolic processes of coral in reefs

• Oxidation of sulfur by bacteria in ocean vent communities

• Photosynthesis by phytoplankton

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following is a primary energy source for producers in near-surface marine communities?

• Solar energy from the sun

• Carbon dioxide from consumers

• Oxygen in the atmosphere

• Heat from Earth's interior

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3