Excretory Products and their Elimination Test 63

Question 1
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Which one of the following statements is correct with respect to salt water balance inside the body of living organisms?

A
When water is not available camels do not produce urine but store urea in tissues.

B
Salmon fish excretes lot of stored saIt through gill membrane in fresh water.

C
Paramecium discharges concentrated salt solution by contractile vacuoles.

D
The body fluids of fresh water animals are generally hypotonic to surrounding water.

Question 2

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Match the following :

	List I (Part of nephron)		List II (Function)
A	Proximal convoluted tubule	I	Impermeable to sodium ions
B	Distal convoluted tubule	II	Impermeable to water
C	Dsecending limb of Henle's loop	III	Facultative reabsorption of water $$Na^+$$
D	Asecending limb of Henle's loop	IV	Reabsorption of nutrients and $$Na^+$$

A- III, B- IV, C- II, D- I

A- III, B- IV, C- I, D- II

A- IV, B- III, C- I, D- II

A- IV, B- II, C- I, D- III

Question 3
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The excretory material of bony fish is

A
Urea

B
Protein

C
Ammonia

D
Amino acid

Question 4
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The size of filtration slits of glomerulus is

A
10 nm

B
15 nm

C
20 nm

D
25 nm

Question 5

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Read the following passage and answer the following questions.
Dialysis tubing is a semipermeable membrane. It allows small molecules, such as water, to pass through easily, while larger molecules, such as sucrose, are restricted. Movement of molecules across the tubing is due to concentration gradients. In an experiment designed to study osmosis, several pieces of dialysis tubing were filled with sucrose solutions of varying concentration and placed in beakers containing distilled water. The rate and direction of water movement was determined by weighing the bags before and after placing them in the distilled water. The data are recorded below.Table 1

Tube number	Tube contents (beaker contents)	Mass(g) 0 minutes	Mass (g) 15 minutes	Mass(g) 30 minutes	Mass (g) 45 minutes	Mass (g) 60 minutes
1	Distilled water (distilled water)	22.3 g	22.4 g	22.2 g	22.3 g	22.3 g
2	10% sucrose (distilled water)	24.8 g	25.3 g	25.7 g	26.4 g	26.9 g
3	40% sucrose (distilled water)	25.1 g	26.3 g	27.5 g	28.9 g	29.6 g
4	Distilled water (40% sucrose)	22.7 g	21.3 g	20.5 g	19.8 g	18.7 g

Why does the mass of Tube 1 remain relatively unchanged throughout the experiment?

The dialysis tubing in Tube 1 is defective and does not allow water to cross

There is no concentration gradient to drive the movement of sucrose

The dialysis tubing broke, allowing the tube contents to mix with the beaker contents

There is no concentration gradient to drive the movement of water

The experimenter failed to record the data properly

Question 6

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Tube number	Tube contents (beaker contents)	Mass(g) 0 minutes	Mass (g) 15 minutes	Mass (g) 30 minutes	Mass (g) 45 minutes	Mass (g) 60 minutes
1	Distilled water (distilled water)	22.3 g	22.4 g	22.2 g	22.3 g	22.3 g
2	10% sucrose (distilled water)	24.8 g	25.3 g	25.7 g	26.4 g	26.9 g
3	40% sucrose (distilled water)	25.1 g	26.3 g	27.5 g	28.9 g	29.6 g
4	Distilled water (40% sucrose)	22.7 g	21.3 g	20.5 g	19.8 g	18.7 g

Cell membranes are also semipermeable, allowing water but not other substances to cross easily. A red blood cell placed in a 0.9% NaCl solution will neither swell nor shrivel. Based on this knowledge, and the information presented in Table 1, what would happen to a red blood cell placed in a 20% NaCl solution?

Water would be drawn out of the cell and the cell would swell

Water would be drawn into the cell and the cell would swell

Water would be drawn out of the cell and the cell would shrivel

Water would be drawn into the cell and the cell would shrivel

No change would occur to the cell

Question 7
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The function of counter current mechanism is performed by
I. Gills
II. Kidneys
III. Intestines
IV. Lungs

A
I and III only

B
II and IV only

C
I, II, and IV

D
I, II, III, and IV

Question 8
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Which of the following is a functions of the kidney?

A
Filtration of blood to remove wastes.

B
Blood pressure regulation

C
pH regulation

D
Both A and C

E
All of the above

Question 9

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Tube number	Tube contents (beaker contents)	Mass(g) 0 minutes	Mass(g) 15 minutes	Mass (g) 30 minutes	Mass(g) 45 minutes	Mass (g) 60 minutes
1	Distilled water (distilled water)	22.3 g	22.4 g	22.2 g	22.3 g	22.3 g
2	10% sucrose (distilled water)	24.8 g	25.3 g	25.7 g	26.4 g	26.9 g
3	40% sucrose (distilled water)	25.1 g	26.3 g	27.5 g	28.9 g	29.6 g
4	Distilled water (40% sucrose)	22.7 g	21.3 g	20.5 g	19.8 g	18.7 g

Why does the mass of Tube 3 increase while the mass of Tube 4 decreases?

Water is moving into Tube 3, and sucrose is moving into Tube 4.

Water is moving into Tube 4, and sucrose is moving into Tube 3.

Water is moving into Tube 3, and water is moving out of Tube 4.

Sucrose is moving into Tube 3, and sucrose is moving out of Tube 4.

Sucrose is moving out of Tube 3, and water is moving out of Tube 4.

Question 10
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The nephrons discharge their urine at the

A
Urinary bladder

B
Urethra

C
Renal pelvis

D
Renal pyramid

Submit Test

Excretory Produ...

Question 1

When water is not available camels do not produce urine but store urea in tissues.

Salmon fish excretes lot of stored saIt through gill membrane in fresh water.

Paramecium discharges concentrated salt solution by contractile vacuoles.

The body fluids of fresh water animals are generally hypotonic to surrounding water.

Question 2

A- III, B- IV, C- II, D- I

A- III, B- IV, C- I, D- II

A- IV, B- III, C- I, D- II

A- IV, B- II, C- I, D- III

Question 3

Urea

Protein

Ammonia

Amino acid

Question 4

10 nm

15 nm

20 nm

25 nm

Question 5

The dialysis tubing in Tube 1 is defective and does not allow water to cross

There is no concentration gradient to drive the movement of sucrose

The dialysis tubing broke, allowing the tube contents to mix with the beaker contents

There is no concentration gradient to drive the movement of water

The experimenter failed to record the data properly

Question 6

Water would be drawn out of the cell and the cell would swell

Water would be drawn into the cell and the cell would swell

Water would be drawn out of the cell and the cell would shrivel

Water would be drawn into the cell and the cell would shrivel

No change would occur to the cell

Question 7

I and III only

II and IV only

I, II, and IV

I, II, III, and IV

Question 8

Filtration of blood to remove wastes.

Blood pressure regulation

pH regulation

Both A and C

All of the above

Question 9

Water is moving into Tube 3, and sucrose is moving into Tube 4.

Water is moving into Tube 4, and sucrose is moving into Tube 3.

Water is moving into Tube 3, and water is moving out of Tube 4.

Sucrose is moving into Tube 3, and sucrose is moving out of Tube 4.

Sucrose is moving out of Tube 3, and water is moving out of Tube 4.

Question 10

Urinary bladder

Urethra

Renal pelvis

Renal pyramid

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