Animal Circulatory System
Biology ⇒ Animal Biology
Animal Circulatory System starts at 9 and continues till grade 12.
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See sample questions for grade 10
A frog has a three-chambered heart. Explain how this affects the efficiency of oxygen transport compared to a mammal.
A student measures the heart rate of a rabbit at rest and after exercise. The heart rate increases after exercise. Explain why this happens.
Describe how oxygen and carbon dioxide are exchanged in the capillaries.
Describe the difference between an open and a closed circulatory system.
Describe the path of blood flow through the human heart, starting from the right atrium.
Explain the role of valves in the circulatory system.
A frog has a three-chambered heart. Explain how this affects the efficiency of oxygen transport compared to a mammal.
A student measures the heart rate of a rabbit at rest and after exercise. The heart rate increases after exercise. Explain why this happens.
Which blood vessel has the highest blood pressure?
(1) Vein
(2) Capillary
(3) Artery
(4) Venule
Which chamber of the human heart receives deoxygenated blood from the body?
(1) Left atrium
(2) Right atrium
(3) Left ventricle
(4) Right ventricle
Which of the following animals has a closed circulatory system?
(1) Earthworm
(2) Grasshopper
(3) Hydra
(4) Sponge
Which of the following animals has a four-chambered heart?
(1) Fish
(2) Frog
(3) Crocodile
(4) Bird
Fill in the blank: The ________ circuit carries blood between the heart and the lungs.
Fill in the blank: The ________ node acts as the natural pacemaker of the heart.
Fill in the blank: The ________ valve prevents backflow of blood from the left ventricle to the left atrium.
Fill in the blank: The ________ vein carries oxygenated blood from the lungs to the heart.
True or False: All arteries carry oxygenated blood.
True or False: All vertebrates have a four-chambered heart.
True or False: In mammals, the left side of the heart contains oxygenated blood.
True or False: The hepatic portal vein carries blood from the digestive organs to the liver.
