Which of these is a decomposer?
a. mouse
b. mushroom
c. tree
d. fox
What is a mushroom (b)?
100
The largest population an area can support at a given time
What is carrying capacity?
100
Autotrophs and producers are names for what organism?
What are plants?
100
A consumer, heterotroph, and meat-eater are all names for what organism?
What is a carnivore?
100
A consumer, heterotroph, and plant-eater are all names for what organism?
What is a herbivore?
200
The spotted turtle is common in fresh water. It eats insects, tadpoles, dead fish, and tender aquatic plants. Which of these best describes the spotted turtle?
a. a herbivore
b. a carnivore
c. an omnivore
d. a decomposer
What is an omnivore (c)?
200
A symbiotic relationship where one organism benefits and the other is not harmed or affected
What is commensalism?
200
A triangular diagram that shows an ecosystem's loss of energy
What is an energy pyramid?
200
Many food chains interconnected
What is a food web?
200
The part of Earth where life exists
What is biosphere?
300
Autotrophs are organisms that produce their own food. Which do scientists classify as autotrophs?
a. chordates
b. fungi
c. plants
d. molds
What are plants?
300
Organism, population, community, ecosystem, and biosphere
What are the 5 levels of environmental organization?
300
Food, water, shelter, habitat, space, natural disasters, and space all describe...
What are limiting factors?
300
A relationship where one organism kills another organism for food
What is predation?
300
A symbiotic relationship where one benefits and the other is harmed
What is parasitism?
400
Albert is studying food web relationships in wetland ecosystems. He learned that hawks feed on shrews and shrews feed on cattails. What is the original source of energy for wetland ecosystems?
What is the sun.
400
Which of the following symbiotic relationships is considered parasitic?
a. ticks feeding on a dog
b. bees transporting pollen from flowers
c. pilotfish swimming under sharks
d. birds eating the insects from the back of a hippopotamus
What is ticks feeding on a dog (a)?
400
The process in which green plants convert energy from the Sun into energy stored in carbon-containing molecules is called:
a. respiration
b. combustion
c. digestion
d. photosynthesis
What is photosynthesis (d)?
400
Oxygen is released into the air by
a. the sun
b. animals
c. volcanoes.
d. plants.
What are plants (d)?
400
The percentage of energy that is transferred from one level to another level
What is 10%?
500
Jenna's class studied a forest food web. Which organism can BEST turn dead plant and animal matter into substances that can be reused by the ecosystem?
a. bacteria
b. birds
c. mice
d. plants
What is bacteria (a).
500
Plants and other producers use sunlight for photosynthesis. What do plants make during photosynthesis?
a. water
b. sugars
c. protein
d. carbon dioxide
What are sugars (b).
500
Roberto feeds his pet iguana a mixture of salad greens, carrots, squash, crickets, and worms as part of his regular diet. What type of consumer is the iguana?
a. herbivore
b. carnivore
c. omnivore
d. scavenger
What is an omnivore (c)?
500
Which of these describes mutualism?
a. a dog with worms in its intestines
b. a turtle and a snail that both eat grass live in a river
c. a honeybee pollinating a plant and receiving nectar for food
d. a small fish attached to a shark, eating tiny pieces of the shark's food as it floats by
What is a honeybee pollinating a plant and receiving nectar for food (c)?
500
The organisms living in an area and the nonliving features of that environment form