APES Unit 1 Test the living world review

The net annual primary productivity of a particular wetland ecosystem is found to be 8,000 kcal/m2 per year. If respiration by the aquatic producers is 12,000 kcal/m2 per year, what is the gross annual primary productivity for this ecosystem, in kcal/m2 per year?

• 4,000
• 8,000
• 12,000
• 20,000
• 96,000

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

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.
• Carbon is concentrated in igneous rocks.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

NGSS.MS-ESS2-1

Which of the following is a process that indirectly removes carbon from Earth's atmosphere?

• Formation of carbonate deposits
• Outgassing by volcanoes
• Respiration by mammals
• Respiration by anaerobic bacteria
• Photodissociation by ultraviolet light

Tags

NGSS.HS-LS2-5

NGSS.HS-ESS2-6

The graph below shows the results obtained when two species of Paramecium were grown together in the same medium. The graph below best explains

• the demographic transition
• sustained logarithmic growth
• the edge effect
• competitive exclusion
• the normal distribution

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

In a typical forest ecosystem, dead trees and fallen trees are most important because of their role in which of the following?

• Providing a valuable source of timber
• Providing habitats for wildlife
• Contributing to soil erosion
• Increasing water runoff
• Removing carbon dioxide from the air

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Select the choice that best fits each statement. The following question(s) refer to the following processes. Plant roots absorb ammonium ions and nitrate ions for use in making molecules such as DNA, amino acids, and proteins.

• Nitrification
• Denitrification
• Assimilation
• Ammonification
• Nitrogen fixation

Tags

NGSS.MS-LS2-3

Select the choice that best fits each statement. The following question(s) refer to the following processes. Nitrate ions and nitrite ions are converted into nitrous oxide gas and nitrogen gas (N2).

• Nitrification
• Denitrification
• Assimilation
• Ammonification
• Nitrogen fixation

Tags

NGSS.MS-LS2-3

Elements that cycle in the environment and that also have a gaseous phase at some point in their cycle include which of the following? I. Carbon II. Phosphorus III. Sulfur

• I only
• III only
• I and II only
• I and III only
• I, II, and III

Tags

NGSS.MS-LS1-6

The maximum efficiency possible in an energy-conversion process that is not limited by the second law of thermodynamics

• 100%
• 95%
• 30%
• 15%
• 1%

Tags

NGSS.HS-PS3-3

NGSS.HS-PS3-4

Approximate efficiency of the conversion of light energy to chemical energy in photosynthesis

• 100%
• 95%
• 30%
• 15%
• 1%

Tags

NGSS.MS-LS1-6