Question

name
wormformation
unlike humans, earthworms have no lungs. creatures
with lungs breathe by inhaling and exhaling (oxygen
and carbon dioxide) gases. worms cannot breathe,
but they do respire through the whole surface of
their bodies. oxygen dissolves in the moisture on the
worms bodies. it then passes into the body and the
bloodstream. worms need enough moisture to keep
their skins wet, but not enough to drown them.
worms are not aquatic animals, but some species can
live under water if there is enough oxygen dissolved
in the water. without moisture, however, the worms
will die.
directions
read the wormformation and answer the questions.
hint: use key ideas to help solve the problems.

1. worms need oxygen and moisture. list three (3) places you might

find wild worms.

1. why do worms live in the places you listed above?
2. according to the wormformation, would it be possible for an

earthworm to live in water in an aquarium?
yes□ no□
under what conditions?

1. will a worm be more likely to survive in warm water or cold water?

why?

Explanation:

1. Under rocks: Rocks can retain moisture and provide a relatively stable environment.
2. In soil: Soil is a common habitat for worms as it contains organic matter and moisture.
3. Under decaying leaves: Decaying leaves create a moist and nutrient - rich environment.

For question 2, worms live in these places because they provide the necessary oxygen (through air pockets in soil, etc.) and moisture.

For question 3, yes. Conditions: If there is enough oxygen dissolved in the water (e.g., from an aquarium pump adding oxygen or plants producing oxygen in the presence of light).

For question 4, a worm is more likely to survive in cold water. Because cold water can hold more oxygen than warm water, and worms need oxygen to respire through their skin.

Answer:

1. Under rocks, In soil, Under decaying leaves
2. These places provide oxygen and moisture.
3. Yes. If there is enough oxygen dissolved in the water (from an aquarium pump or plants in light).
4. Cold water. Because cold water holds more oxygen.