BIO100- Ch22 Review

How are biomes characterized?

• By the number of species present.

• By the climate and predominant vegetation.

• By the size of the area.

• By the presence of water bodies.

What is an ecosystem?

• A community of only plants in an area

• All the life and nonliving things and processes in an area

• A group of animals living together

• A single species living in isolation

Which of the following is an example of a nonliving (abiotic) component of an ecosystem?

• Bison

• Prairie chicken

• Soil

• Elk

How do keystone species affect the environment?

• They only consume resources

• They produce, maintain, or modify the environment

• They decrease biodiversity

• They have no impact on other species

What is a critical component of proteins, DNA, and RNA?

• Oxygen

• Carbon

• Nitrogen

• Hydrogen

How is phosphorus added to an ecosystem?

• Through photosynthesis

• By the weathering of rocks or human activities

• Via nitrogen fixation

• Through carbon dioxide absorption

What drives plant life in terrestrial biomes?

• Salinity and depth

• Temperature, rainfall, and seasons

• Ocean currents

• Altitude and latitude

What factors influence life in aquatic biomes?

• Altitude and latitude

• Temperature, salinity, depth, and movement

• Soil type and vegetation

• Human activity and pollution

Which biome is primarily found near the equator?

• Tundra

• Taiga

• Tropical Forest

• Temperate Grassland

What biome is characterized by cold temperatures and is located near the Arctic Circle?

• Desert

• Tundra

• Savanna

• Mediterranean