WorksheetsLife Science
Total questions: 15
Worksheet time: 15mins
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?
It is producer, because it makes it own food
It is a producer, because it is eaten by consumers.
It is a consumer, because it gets energy from producers
It is a decomposer, because it breaks down sunlight.
What would most likely happen if all the decomposers in an ecosystem were removed?
The animals in the ecosystem would die because of the spread of disease
The plants in the ecosystem would eventually die because of a lack of nutrients in the soil
The plants in the ecosystem would begin to die out because of a decrease in available water
The animals in the ecosystem would eat other types of food because of a decrease in producers
A food chain in an ecosystem includes blackberry bushes, deer, and wolves. (Deer eat blackberries, wolves eat deer). If the population of wolves decreases, how will this affect the population of blackberry bushes?
It will decrease because there will be fewer deer
It will increase because there will be fewer deer
It will decrease because there will be more deer
It will increase because there will be more deer.
A mouse eats seeds and insects. Which best describes the role of the mouse?
consumer
decomposer
herbivore
producer
Which would most likely cause a decrease in a population of herbivores?
an increase in producers
a decrease in decomposers
an increase in plants
an increase in carnivores
Which type of animal usually eats both producers and consumers?
omnivores
carnivores
herbivores
predator
Which classification best describes herbivores?
producers
consumers
predators
decomposers
Which has the greatest effect on the amount of salt in a salt marsh?
the number of animals living in the marsh
the closeness of the marsh to the ocean
the depth of the water in the marsh
the temperature of the water in the marsh
What would most likely result if all plants in an area were destroyed?
Consumer populations would increase because more sunlight would reach the ground
Decomposer populations would increase because more sunlight would reach the ground
Consumer populations would decrease because plants provide them with water
Consumer populations would decrease because pants provide them with energy
An organism gets the nutrients it needs by breaking down dead leaves. Which is the best way to classify the organism?
a producer
a decomposer
a herbivore
consumer
Which best describes an ecosystem?
all the living and nonliving things in an area
all the organisms of the same kind in an area
a large area, such as a forest
a place where many organisms may live
In a lake ecosystem, how would people catching too many minnows most likely affect the minnows' predators?
predators will loose major food source
predators will leave to find food
predators would not be affected at all
predators would reproduce more
Which process in plants is primarily responsible for converting light energy into chemical energy?
Photosynthesis
Respiration
Transpiration
Fermentation
What is the role of chlorophyll in photosynthesis?
Absorbs water
Absorbs sunlight
Releases oxygen
Stores glucose
In a food chain, which organism is typically at the base?
Herbivores
Carnivores
Producers
Decomposers
