answer it please.....give the right answer.
Attachments:
Answers
Answered by
1
Answer:
(a) Atria has to pump deoxygenated blood only to lungs but ventricles have to pump the oxygenated blood to whole body. For this it requires much energy and powerful structure. that's why ventricles have thicker walls
(c) aquatic vertebrates have to filter oxygen from water whereas terrestrial vertebrates have to filter out oxygen from air surrounding them.
(e) Artia carry blood from body to heart whereas veins carry blood from heart to other body parts . here the chances of backflow of increase. To prevent this they require valves to check the backflow of blood to heart.
Answered by
1
Answer:
Please see the picture. Hope it helps
Attachments:
Similar questions