Ecosystems Question Preview (ID: 49529)
5.L.2.
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Which would most likely cause a decrease in a population of herbivores?
a) an increase in the number of producers
b) a decrease in the number of decomposers
c) an increase in the number of carnivores
d) an increase in the types of plants
This is a food chain that includes grass, a grasshopper, and a bird. grass → grasshopper → bird. How is the grass in this food chain BEST described?
a) It is a producer, because it makes its own food.
b) It is a producer, because it is eaten by consumers.
c) It is a consumer, because it gets energy from producer
d) It is a decomposer, because it breaks down sunlight
What will be most affected if the decomposers in an ecosystem are removed?
a) the quality of the soil
b) the spread of disease
c) the distribution of organisms
d) the availability of water
Which classification best describes herbivores?
a) producers
b) consumers
c) decomposers
d) predators
Which has the greatest effect on the amount of salt in a salt marsh/estuary?
a) the number of animals living in the marsh/estuary
b) the depth of the water in the marsh/estuary
c) the closeness of the marsh/estuary to the ocean
d) the temperature of the water in the marsh/estuary
Which type of animal usually eats both producers and consumers?
a) a carnivore
b) an omnivore
c) an herbivore
d) a predator
In a food chain, an arrow is drawn from a grasshopper to a bird. What does this mean?
a) the grasshopper eats the bird
b) the bird eats the grasshopper
c) the energy is flowing from the grasshopper to the bird
d) the energy is flowing from the bird to the grasshopper
In the estuary ecosystem, which organism has the LEAST available energy?
a) algae
b) crabs
c) the Heron
d) fish
In a desert ecosystem, which organism has the MOST available energy?
a) scorpion
b) cactus
c) vulture
d) jackrabbit
What would happen if the the flower was removed from the rain forest food chain that follows? Flower-butterfly-toucan-jaguar
a) the number of toucans would increase
b) the number of toucans would decrease
c) the number of butterflies would increase
d) the number of butterflies would decrease
Which of the following organisms is a producer?
a) spider
b) fungus
c) fish
d) sunflower
Which of the following organisms is a primary consumer?
a) grasshopper
b) shark
c) coyote
d) human
Which lists organisms that would live in the deciduous forest?
a) moose and elk
b) prairie dog and bison
c) bears, deer, squirrels
d) parrots and monkeys
What makes an estuary different than the ocean?
a) the amount of salt
b) the amount of animals
c) the amount of plants
d) the amount of sunlight
Which is an example of the job of a decomposer?
a) to make food from the sun's energy
b) to provide energy for an herbivore
c) to be prey for a top predator
d) to recycle dead trees by adding their nutrients to the soil
A snake gets its energy by eating a mouse. Where did the mouse MOST likely get his energy?
a) from the sun
b) from grass
c) from another mouse
d) from the soil
In which biome do things decompose the fastest?
a) desert
b) grassland
c) tropical rain forest
d) taiga
What is the difference between biotic and abiotic factors?
a) biotic factors are living and abiotic factors nonliving
b) biotic factors are animals and abiotic factors are plants
c) biotic factors are nonliving and abiotic factors are living
d) a biotic factor is found on land and an abiotic factor is found in water
Why are there different kinds of consumers?
a) because they are different sizes and shapes
b) because they eat different things
c) because they live different places
d) because some are plants and some are animals
What would most likely happen if all of the decomposers in an ecosystem were removed?
a) The animals in the ecosystem would die because of the spread of disease
b) The plants in the ecosystem would begin to die out because of a decrease in available water.
c) The animals in the ecosystem would eat other types of food because of a decrease in producers.
d) The plants in the ecosystem would eventually die because of a lack of nutrients in the soil.
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