Transportation in Animals
Transportation in Animals
Transportation in Animals:
In unicellular animals such as amoeba and paramecium, no special transport system is required. Every part of the organism gets nutrients and oxygen directly through cell diffusion. In hydra, water transports food and oxygen to all parts of the body and takes wastes away from the different organs for excretion.
In multicellular organisms, the transportation is done by a specialized system known as the circulatory system. It consists of the heart, arteries, veins and capillaries. Blood is the medium for transport of all the necessary materials to different parts of the body.
Which of the following are correct ? (a) In multicellular organisms, the transportation is done by a specialized system known as the circulatory .It consists of the heart, arteries, veins and capillaries. (b) Blood is the medium for transport of all the necessary materials to different parts of the body. (c) The blood vessels are of three kinds namely, arteries, veins, and capillaries,and a thick muscular organ called the heart . | |||
| Right Option : D | |||
| View Explanation | |||
In unicellular animals every part of the organism gets nutrients and oxygen directly through _____________________ . | |||
| Right Option : A | |||
| View Explanation | |||
Humans have a well developed and efficient circulatory system in which a thick muscular organ called the ___________________ is present. | |||
| Right Option : A | |||
| View Explanation | |||
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