Question

vocabulary
term | definition | example sentence
decomposers (noun) | organisms that break down dead plants and animals into simpler materials, adding nutrients to the soil. | decomposers like earthworms and fungi help make the soil healthy.

multiple choice questions
question #1
what do decomposers like earthworms and fungi do for the soil?
a. they mix rocks with water to make soil.
b. they eat dead plants and animals and add nutrients to the soil.
c. they clean up pollution by removing rocks from the soil.
d. they help plants grow by making their own food.

question #2
why are decomposers important for ecosystems?
a. they create air and water for plants.
b. they recycle nutrients and clean up waste in the environment.
c. they stop plants and animals from breaking down.
d. they turn soil into rocks and sand.

question #3
what would happen if decomposers did not break down dead plants and animals?
a. the soil would not have enough nutrients for new plants to grow.
b. the soil would turn into rocks and sand.
c. plants would grow faster without decomposers.
d. dead plants and animals would disappear on their own.

question #4
how do decomposers like bacteria and fungi help the soil?
a. they mix air and water in the soil.
b. they break down dead matter into tiny pieces that add nutrients.
c. they stop plants from using nutrients in the soil.
d. they remove rocks and sand from the soil.

this diffi resource was created by dara coleman

Explanation:

Question #1

From the definition of decomposers, they break down dead plants and animals and add nutrients to the soil. Option A is incorrect as decomposers don't mix rocks with water. Option C is wrong as they don't remove rocks for pollution cleanup. Option D is incorrect as decomposers don't make their own food to help plants grow. So the correct option is B.

Decomposers recycle nutrients by breaking down dead matter and clean up waste (dead organisms) in the environment. Option A is wrong as they don't create air and water. Option C is incorrect as they help break down plants and animals. Option D is wrong as they don't turn soil into rocks and sand. So the correct option is B.

Decomposers add nutrients to the soil by breaking down dead matter. If they didn't, the soil would lack nutrients for new plants. Option B is wrong as soil doesn't turn into rocks and sand. Option C is incorrect as plants would grow slower without nutrients. Option D is wrong as dead matter wouldn't disappear on its own. So the correct option is A.

Answer:

B. They eat dead plants and animals and add nutrients to the soil.

Question #2