alleryStart learning →How many chambers does the human heart have in all?
- Two
- Three
- Four
- Six
Show answer and solution
Correct answer: C. Four
One atrium and one ventricle serve each side, which gives four chambers.
Olympiad (Class 7) Transportation in plants and animals — practice questions
Explore 60 free Transportation in plants and animals questions in Olympiad (Class 7) Science. Open each question or exercise to read its content, reference answers and available explanation.
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Showing questions 1–30 of 60.
How many chambers does the human heart have in all?Read the answer and worked solution →Blood pumped out of the right ventricle is sent to which organs?Read the answer and worked solution →Which vessel carries oxygen-rich blood out of the left ventricle to the body?Read the answer and worked solution →The superior and inferior vena cava bring used blood back into which chamber?Read the answer and worked solution →Which chamber is the first to receive blood returning from the lungs?Read the answer and worked solution →In a human, blood always stays inside the heart and vessels. Such a system is called:Read the answer and worked solution →In an insect, the fluid bathing the organs directly in the body cavity is called:Read the answer and worked solution →Which animal has a closed circulatory system like that of humans?Read the answer and worked solution →A fish heart pumps blood once per body circuit. How many chambers does it have?Read the answer and worked solution →A frog's heart is made of how many chambers?Read the answer and worked solution →Which pair of animals has a heart fully divided into four chambers?Read the answer and worked solution →Why can a flatworm live without a circulatory system?Read the answer and worked solution →In a jellyfish, which cavity both digests food and spreads it around the body?Read the answer and worked solution →Which small vessels connect the capillaries to the veins?Read the answer and worked solution →Blood that has just absorbed digested food from the gut is first carried by the portal vein to which organ?Read the answer and worked solution →The heart muscle gets its own blood supply from which arteries?Read the answer and worked solution →Why are the walls of the aorta elastic?Read the answer and worked solution →Which molecule in red blood cells mainly carries oxygen in humans?Read the answer and worked solution →A crab carries oxygen in its hemolymph on which molecule?Read the answer and worked solution →In healthy human arterial blood, about what share of oxygen is bound to hemoglobin?Read the answer and worked solution →Which system returns excess tissue fluid to the blood as lymph?Read the answer and worked solution →Which part of blood helps it clot after a cut?Read the answer and worked solution →Which blood cells attack germs and form part of the body's defence?Read the answer and worked solution →Unlike a frog's red blood cells, mature human red blood cells lack a:Read the answer and worked solution →About what percentage of blood plasma is water?Read the answer and worked solution →A sample of 1000 mL of whole blood is left to separate. About how much is plasma?Read the answer and worked solution →What is the colour of plasma by itself?Read the answer and worked solution →What does the term serum mean?Read the answer and worked solution →With a pH of 7.35 to 7.45 (neutral is 7), human blood is:Read the answer and worked solution →Blood is about 7 percent of body weight. How heavy is the blood of a 60 kg person?Read the answer and worked solution →
Worked practice questions
Blood pumped out of the right ventricle is sent to which organs?
- Lungs
- Brain
- Kidneys
- Liver
Show answer and solution
Correct answer: A. Lungs
The right ventricle pushes oxygen-poor blood through the pulmonary artery to the lungs for gas exchange.
Which vessel carries oxygen-rich blood out of the left ventricle to the body?
- Vena cava
- Main aorta
- Jugular vein
- Portal vein
Show answer and solution
Correct answer: B. Main aorta
The aorta is the large artery that delivers oxygenated blood from the left heart to the body.
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