Excretory System

Q.

Blood collects the waste material from the tissues and takes it to the___, where it is filtered out of the blood capillaries. Here, the useful materials are retained by the blood.

1. brain

2. heart

3. liver

4. kidneys

Q.

If cacti dont transpire, how do they transport or circulate minerals and nutrients?

Q.

'x' transports urine from kidney to the urinary bladder and 'y' transports urine from the urinary bladder to outside.

1. x - renal artery, y - renal vein

2. x - renal vein, y - renal artery

3. x - ureter, y - urethra

4. x - urethra, y - ureter

Q. In human male, urethra is the common pathway for both urine and semen.

1. True
2. False

Q. Exchange of gases between cells and tissue fluid is known as _____.

1. external respiration
2. expiration
3. internal respiration
4. inspiration

Q. Label the parts in the kidney.

1. Ureter
2. Medulla
3. Cortex
4. Renal Artery

Q.

What removes ammonia from the body?

Q.

Which of these is not a part of the excretory system?

1. Kidney

2. Prostate gland

3. Ureter

4. Urethra

Q.

Synthesis of urea takes place in which of these organs?

1. Liver

2. Lungs

3. Stomach

4. Kidney

Q.

Which of the following is/are part(s) through which plants excrete wastes?

1. Phloem

2. Stomata

3. Hydathodes

4. Heartwood

Q.

(a) Name the various organs of the human excretory system.
(b) Draw a neat labeled diagram of the human excretory system.
(c) What is the function of the excretory system in humans?

Q. Name the small pore present at the tip of leaves that helps in excretion in plants.

1. Lenticel
2. Heart wood
3. Stomata
4. Hydathode

Q. The process of removal of waste from the body is known as _________.

1. excretion

2. digestion

3. respiration

4. diffusion

Q. The function of _____________ is the purification and filtration of blood

1. neurons
2. nephrons

Q.

The process of removing wastes in living beings is known as _____.

1. Respiration

2. Excretion

3. Circulation

4. Digestion

Q.

Which among the options is/are accessory excretory organ(s)?

1. Liver

2. Skin

3. Lungs

4. Heart

Q. Find out the incorrect pair of organs and their respective excretory products.

1. Liver - Urine
2. Kidney - Urine
3. Skin - Sweat
4. Lungs - Carbon dioxide

Q.

In humans, the urinary bladder opens into

1. Ureter

2. Vestibule

3. Uterus

4. Urethra

Q. Tick the correct statement(s) about excretion and excretory system.

1. A pair of urethra exist in the human excretory system.

2. A person can live with one kidney.

3. Ureter finally expels the urine.

4. Urine is produced by the kidneys.

Q. Arrange the following parts of the air passage from upper to lower respiratory tract.

1. Trachea
2. Pharynx
3. Larynx
4. Bronchi

Q.

Give scientific reason for the following statements:

1. Urine is slightly thicker in summer than in winters.

2. Renal cortex has a dotted appearance.

3. There is a frequent urination in winter than in summer

Q.

The process of removing waste in living beings is known as __ .

Q.

What is the role of ureter in the male reproductive system?

Q. What do you mean by hemodialysis?

Q. Which of the following organ is the main excretory organ in human?

1. Liver
2. Kidney
3. Bladder
4. Urethra