Ecosystems Part Two Review

A picture is shown below. Based on this picture, which is a biotic factor?

• the water

• the clouds

• the tree

• the sun

Which of the following is an abiotic factor that can influence the quantity of fish a pond can support?

• availability of plants

• concentration of bacteria

• quality of water

• number of consumers

Which of these is an abiotic element of a desert ecosystem?

• sand

• cactus

• lizard

• scorpion

Which mechanism helps carbon to cycle from the atmosphere to living organisms?

• tissue decomposition

• cellular respiration

• photosynthesis

• transpiration
  

Which best describes the role plants serve in the oxygen cycle?

• They absorb oxygen during photosynthesis.

• They absorb oxygen during decomposition reactions.

• They release oxygen as a waste product of photosynthesis.

• They release oxygen as a waste product in cellular respiration.

Which best explains how plants contribute to the water cycle?

• by being the base of all successful food webs

• by storing water in their vacuoles

• through photosynthesis

• through transpiration

The temperate deciduous forest and temperate grassland biomes have the same maximum temperature. Which of the following is a reason they have different plant and animal

species?

• they are at different altitudes

• they are at different latitudes

• the forest gets more precipitation

• the grassland gets more precipitation

Which of these BEST describes biomes?

• large ecosystems that have distinctive organisms and a particular climate

• a group of individuals of the same species that live together in the same area

• a system made up of parts that work together

• external conditions that affect an organism

Which of these is an abiotic element in an ecosystem?

• the average yearly rainfall in the ecosystem

• the types of producers found in the ecosystem

• the size of a predator population in the ecosystem

• the microorganisms living in the soil of the ecosystem

Which of the following is an abiotic factor in a river ecosystem?

• dragonfly

• trout

• water

• frog