D U Practice Quiz 1

Which of the following wetlands is dominated by emergent vegetation?

• Marshes

• Bogs

• Swamps

• None of the choices

A large plot of land in a grassland ecosystem was converted for agriculture. After four decades of agricultural use the land was abandoned and began to revert to its original grassland state. This is an example of which of the following?

• Primary succession

• Secondary succession

• Climax community

• Ecosystem management

Tags

NGSS.MS-LS2-4

In what year was the Federal Water Pollution Control Act established?

• 1869

• 1935

• 1948

• 1978

Denitrification is an essential step in which of the following cycles?

• Carbon

• Nitrogen

• Phosphorus

• Hydrogen

Tags

NGSS.MS-LS2-1

Which of the following is true about chlorophyll?

• Is required in order to perform photosynthesis

• Is required in producers to create carbon dioxide

• Synthesizes food from oxygen and water

• None of the choices

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Organisms do NOT require nutrients, or chemical substances, during which of the following phases?

• Growth

• Reproduction

• Maintenance

• Sleep

Grasslands are dominated by grasses and several species of forbs. Which of the following best describes a forb?

• Broadleaf plants and lower shrub vegetation

• A drought tolerant species of grass

• Trees and taller shrubs which survive in grasslands

• Invasive species which takes over grasslands

Forests are responsible for storing large amounts of carbon. However, there are some cases in which forests can also release significant amounts of carbon into the atmosphere. When does this typically occur?

• Trees release carbon when decaying, so when areas experience deforestation large amounts of a forest’s sequestered carbon will be released back into the atmosphere

• Trees do not release atmospheric carbon but do secrete carbon into the soil, resulting in forest soils containing an excess of carbon

• Trees release large amounts of carbon during the process of photosynthesis, in vast forests of broadleaf trees this outweighs the amount of carbon sequestered

• Trees can only hold a limited amount of carbon, so a forest of mature trees begins to release carbon as trees age

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following is a true statement about non-tidal marshes?

• They occur in poorly draining low places and along boundaries of freshwater sources

• Their water levels are influenced by tidal patterns

• They contain salt-water

• They are inhospitable to most plant and animal types, so biodiversity is limited

Which of the following best describes high-grading harvest?

• All growth was cleared in an area no matter the age or type of plant

• Only cutting the largest or most valuable tree species in an area

• Cutting off the tallest branches of trees to allow more sunlight to penetrate the forest floor

• Cutting trees which were small and overcrowding other trees and plants in the area