Ch 7 - Exploring the Pond Flashcards

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1
Q

What is a community?

A

A community is a group of plants and animals (or people) that depend on each other to live.

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2
Q

What kind of community is the pond?

A

a freshwater community

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3
Q

Why do plants grow easily around the pond?

A

The mud is rich in minerals.

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4
Q

What plants grow in the pond and in the ocean?

A

algae

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5
Q

What does it mean to make comparisons?

A

to observe similarities and differences

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6
Q

What can you see if you look at pond water under a microscope?

A

tiny animals that live in pond water

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7
Q

What is the name for the tiny animals that live in pond water that you can’t see without a microscope?

A

protozoans

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8
Q

What is dissolved in the water that fish need to breathe?

A

oxygen

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9
Q

What gas do plants need?

A

carbon dioxide

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10
Q

How do the fish and the plants of the pond help each other?

A

Fish exhale carbon dioxide, which is used by the plants. Plants give off oxygen, which is used by the fish.

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11
Q

What makes the tiny bubbles found in water?

A

oxygen

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12
Q

What is the first stage of growth for an amphibian?

A

egg

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13
Q

Where is the egg laid?

A

in the water, attached to a water plant

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14
Q

What is the second stage of growth, after the egg hatches?

A

tadpole

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15
Q

Where does the tadpole live?

A

in the water

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16
Q

How is the tadpole able to get the oxygen it needs to live?

A

It has gills.

17
Q

When can the tadpole live on land?

A

when its lungs have formed

18
Q

What is the salamander tadpole also called?

A

larva

19
Q

When is the frog tadpole considered an adult frog?

A

when it loses its tail

20
Q

What can the salamander do if it loses its tail or leg?

A

grow a new one

21
Q

Why must the salamander live in a moist, shady place?

A

It receives the water it needs to live through its skin.

22
Q

Do all birds build their nests in trees?

A

No

23
Q

How are most snakes born?

A

They hatch from eggs.

24
Q

How are water snakes born?

A

They are born alive.

25
Q

Why is the water moccasin often called “cottonmouth”?

A

Its mouth is white like cotton.

26
Q

Will most water snakes bite?

A

Yes

27
Q

Are all water snakes dangerous?

A

No

28
Q

In what three ways are a pond and an ocean different?

A

The pond is freshwater; the ocean is salt water.

The pond is usuallys still; the ocean is always moving.

The pond grows pondweed; the ocean grows seaweed.

29
Q

All amphibians are cold-blooded. What does this mean?

A

Their bodies become the same temperature as their surroundings.

30
Q

Why is it good that turtles eat many young frogs and fish?

A

There would be too many frogs and fish if the turtles didn’t eat them. It keeps the number of animals in the right balance.

31
Q

What holds a water strider on top of the water?

A

surface film (or surface tension)

32
Q

A minnow is what class of vertebrate?

A

a fish

33
Q

A bittern is what class of vertebrate?

A

a bird

34
Q

A muskrat is what class of vertebrate?

A

a mammal

35
Q

Name two amphibians of the pond.

A

frog

salamander

36
Q

Name two reptiles of the pond.

A

turtle

water snake (eg water moccasin)

37
Q

Name some invertebrates of the pond.

A

dragonflies

mosquitoes

damselflies

water striders

water boatman