Role in Homeostasis

Q.

Which human body organ can regrow?

Q. Choose the systems in the body that are involved in maintaining homeostasis.

1. Circulatory system
2. Excretory system
3. Reproductive system
4. Respiratory system

Q.

Which of these organs help in the removal of excess salts from the human body?

1. Kidneys, lungs, skin

2. Kidneys, lungs

3. Kidneys, skin

4. Lungs, skin

Q.

Which organ has the capacity to regenerate?

1. Lung

2. Kidney

3. Stomach

4. Liver

Q.

Does the pancreas grow back after surgery?

Q.

Why do humans excrete urea instead of ammonia?

Q.

What are the types of organs and tissues depending on their ability to regenerate?

Q.

Excess water in plants is removed through stomata and hydathodes.

1. False
2. True

Q. Choose the factors that are homeostatically maintained.

1. pH
2. Temperature
3. $O_2$ concentration
4. Pressure
5. ${\mathrm{CO}}_2$ concentration
6. Water balance
7. Emotions
8. Senses

Q.

Excess water and minerals are eliminated through sweat glands.

1. True

2. False

Q. The excretory organs of Gastrotricha are

1. Protonephridia
2. Both A and B
3. Renette cell
4. Solenocytes

Q. The excretory pore present in Ascaris are

1. One
2. Three
3. One anterior and one posterior
4. One pair

Q.

How is sweat useful for us?

1. It cools us down

2. Neither A nor B

3. Both A or B

4. It removes wastes

Q.

Which of the following is removed in large quantities from our body by lungs?

1. Carbon dioxide

2. Bile

3. Ammonia

4. Carbon dioxide and bile

Q.

Which of the following is not an excretory product in animals?

1. Urea

2. Uric acid

3. Ammonia

4. Hydrochloric acid

Q.

Match the following organs/components with the elements which they help in excreting: $\begin{array}{cc}\text{Column I}& \text{Column II}\\ \text{i. Lungs}& \text{a. Low amount of nitrogenous waste}\\ \text{ii. Sebaceous secretion}& \text{b. Sodium chloride and lactic acid}\\ \text{iii. Sweat}& \text{c. Hydrocarbons, sterols and waxes}\\ \text{iv. Saliva}& \text{d. Carbon~dioxide}\end{array}$

1. i).➡ a ., ii).➡ c., iii).➡ b., iv).➡ d

2. i).➡ d., ii).➡ c., iii).➡ b., iv). ➡ a

3. i).➡b., ii).➡ c., iii).➡ d., iv). ➡ a

4. i).➡ a., ii).➡ d., iii).➡ b., iv). ➡ c