Excretion

Q. Excretion is the

1. Intake of food
2. Burning of food
3. Moving from one place to another
4. Removal of waste materials

Q.

The process of getting rid of the waste products in an organism is called __.

Q. Sweat and urine are two ways by which we excrete our cellular wastes.

1. True
2. False

Q. Match the following animals with the characteristic features of their digestive system.

1. Rumination
2. eat excreta
3. Gizzard

Q. The process by which living organisms get rid of their wastes is called ________ .

1. respiration
2. excretion
3. digestion
4. circulation

Q.

Question 8

Which of the following is an incorrect statement about excretion?
(a) Excretion takes place in plants.
(b) Excretion takes place both in plants and animals.
(c) Excretion is the process of getting rid of excess water only.
(d) Secretion is one method of excretion.

Q.

Question 13

If you happen to go to a desert, what changes do you expect to observe in the urine you excrete? You would

1. Excrete small amount of urine.
2. Excrete large amount of urine.
3. Excrete concentrated urine.
4. Excrete very dilute urine.

Which of the above would hold true?
(a) 1 and 3
(b) 2 and 4
(c) 1 and 4
(d) 1 and 2

Q. Why is it necessary to excrete waste products?

Q.

Urine consists of 95% urea.

1. True

2. False

Q.

Wastes are removed from the bodies of living organisms only in the form of urine.

1. True

2. False