Duckweed, Elodea, and Algae

Duckweed, Elodea, and Algae

​Read page 17 in your book. When you are finished, move on to the next slide to answer questions. Use your book to help you!

Multiple Select

Why should you add duckweed, elodea, and algae to your aquarium?

Select all that apply.

• They are beautiful to look at.

• They provide food for animals.

• They provide oxygen for the water.

• They provide shelter for animals.

Multiple Choice

Duckweed, elodea, and algae are _____.

• producers

• consumers

Multiple Choice

What gas to producers take in? 

• oxygen

• carbon dioxide 

Multiple Choice

What is the name for the process in which plants, algae, and some bacteria make their own food?

• Photoplankton

• Photosynthesis

• Digestion

• Chlorophyll

Multiple Select

Which of these organisms use oxygen to breathe?

• fish

• snails

• tadpoles

​Read page 18 in your book. When you are finished, move on to the next slide to answer questions. Use your book to help you!

Multiple Choice

Animals can produce their own food. 

• True

• False

Multiple Choice

What is the name for animals that eat water plants and algae?

• producers

• photosynthesis

• respiration

• consumers

​Read page 19 in your book. When you are finished, move on to the next slide to answer questions. Use your book to help you!

Multiple Choice

True or false. It is algae that makes pond water look green.

• true

• false

Multiple Select

What animals eat duckweed?

• fish

• snails

• ducks

• algae

Multiple Choice

Duckweed makes new plants by forming new ___.

• roots

• leaves

• fronds

• stems

​Read page 20 in your book. When you are finished, move on to the next slide to answer questions. Use your book to help you!

Multiple Choice

Elodea can grow in which two ways?

• reaching out of the water

• rooting to the bottom of the pond

• floating freely near the surface of the water

• in a flower pot

Multiple Choice

What problem does elodea cause?

• It has a tough time absorbing sunlight.

• It can grow quickly and clog waterways.

• It turns ponds green.

• It dies before the animals can eat it.