Name the process and the organ which helps in removing the following wastes from the body.
(a) Carbon dioxide
(b) Undigested food
(c) Urine
(d) Sweat

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Solution

Ans) (a) Exhalation . The organ which helps in this process is the lungs.

(b) Egestion. The organs involved are the large intestine and the anus.

(c) Excretion - The organs involved are the kidneys.

(d) Perspiration . The organs involved are the sweat glands.

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Q. Name the process and the organ which helps in removing the following wastes from the body.
(a) Carbon dioxide
(b) Undigested food
(c) Urine
(d) Sweat

Q. Which of the following helps in removal of undigested food from the body?

Column I consists of different waste materials expelled by the body and column II consists of the organs that help in the process. Match them accordingly.
$\begin{matrix} Column I & Column II a) Sweat & 1. Lungs b) Carbon dioxide & 2.Kidney c) Urine & 3. Skin \end{matrix}$

Q. The partially digested food coming from the stomach of a person enters a long and narrow organ A in his body. The organ A receives the secretion of two glands : liver and pancreas. Liver secretes a greenish-yellow liquid B which is normally stored in the organ C. Pancreas secretes pancreatic juice which contains three digestive enzymes D, E and F. The intestinal juice completes the process of digestion of food. The inner wall of organ A has millions of tiny finger-like projections G which help in the rapid absorption of digested food into blood stream. The undigested part of food then passes into wider tube H which absorbs most of the water from undigested food. The last part of tube H called I stores this undigested food (or waste) for some time. The undigested food is then passed out though opening J as faeces in the process known as K.
(a) Name the organ A.
(b) Name (i) liquid B, and (ii) organ C.
(c) What are the digestive enzymes D, E and F?
(d) Name the projections G present on the inner wall of organ A.
(e) Name (i) tube H (ii) part I (iii) opening J, and (iv) process K.

Q. is the process of removal of undigested food from the body.

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Excretion

Standard VII Biology

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Name the process and the organ which helps in removing the following wastes from the body. (a) Carbon dioxide (b) Undigested food (c) Urine (d) Sweat

Ans) (a) Exhalation . The organ which helps in this process is the lungs. (b) Egestion. The organs involved are the large intestine and the anus. (c) Excretion - The organs involved are the kidneys. (d) Perspiration . The organs involved are the sweat glands.

Name the process and the organ which helps in removing the following wastes from the body.
(a) Carbon dioxide
(b) Undigested food
(c) Urine
(d) Sweat

Ans) (a) Exhalation . The organ which helps in this process is the lungs.

(b) Egestion. The organs involved are the large intestine and the anus.

(c) Excretion - The organs involved are the kidneys.

(d) Perspiration . The organs involved are the sweat glands.