Gas Exchange Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

How do flatworms exchange gases?

A

Simple diffusion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Do flatworms have a permeable surface?

A

Yes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Do flatworms have haemoglobin?

A

No

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Do earthworms have haemoglobin?

A

Yes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What has a larger surface area to volume ratio, the flatworm or the earthworm?

A

The flatworm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Does the earthworm have a high oxygen requirement?

A

No

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the respiratory surface of the earthworm?

A

The skin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What do amphibians use for gas exchange?

A

Their skin and their lungs.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How would you describe the skin of an amphibian?

A

Moist and permeable

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Do amphibians have a cardiovascular system?

A

Yes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

How do fish inhale?

A

• The mouth opens
• The operculum closes
• The floor of the mouth cavity is lowered
• The volume of the mouth cavity increases and the pressure falls
• Water flows into the mouth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How do fish exhale?

A

• The mouth closes
• The operculum opens
• The floor of the mouth cavity is raised
• The volume of the mouth cavity decreases and the pressure increases
• Water flows out of the gills

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the advantage of counter current flow?

A

The concentration gradient is maintained across the entire gill plate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is counter current flow?

A

Blood and water flow in opposite directions, maintaining the concentration gradient.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly