Excretory Products and their Elimination Test

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Excretory Products and their Elimination Test - 5

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Weekly Quiz Competition

Question 1
1 / -0

The renal tubule which is stimulated by ADH hormone is

A
Distal convoluted tubule

B
Proximal convoluted tubule

C
Ascending loop of Henle

D
Descending loop of Henle

Solution

The renal tubule which is stimulated by ADH hormone is distal convoluted tubule. ADH increases permeability of water in DCT.
Question 2
1 / -0

The presence of which of the following in urine, even in meager amounts, is indicative of a possible problem in the renal system of a patient?

A
Urea

B
Glucose

C
Sodium

D
Creatinine

Solution

Glucose is reabsorbed completely by the kidney. So its presence in the kidney even in small amounts is indicative of some renal problem.
Question 3
1 / -0

The enzyme arginase converts

A
Proteins to amino acid

B
Purines to uric acid

C
ammonia to urea

D
Ammonia to guanine

Solution

Arginase enzyme converts ammonia to urea in mammals. Ammonia combines with CO₂in the liver with the expenditure of energy and in presence of enzyme arginase to get finally converted into urea.
Question 4
1 / -0

The least amount of water is required for elimination of nitrogenous waste by

A
Earthworm

B
Sepia

C
Frog

D
Cockroach

Solution

Nitrogenous waste in cockroach is uric acid which is the least toxic nitrogenous waste product and requires very little water for elimination. Cockroach requires least water for elimination of nitrogenous waste product.
Question 5
1 / -0

In nephron, the maximum reabsorption takes place in

A
Thick ascending Loop of Henle

B
Distal convoluted tubule

C
Proximal convoluted tubule (PCT)

D
Collecting ducts

Solution

Maximum reabsorption in nephron takes place in Proximal convoluted tubule cells. About two third salt and water, 100% organic solutes, 65% potassium, 50% urea , approx 80% phosphate and approx 70-90% citrate is reabsorbed in PCT.
Question 6
1 / -0

Excretion by amoebocytes takes place in

A
Prawns

B
Star fish

C
Herdmania

D
Balanoglossus

Solution

Excretion takes place by the amoebocytes found in the coelomic fluid of starfish.
Question 7
1 / -0

In Euglena, the primary function of contractile vacuole is

A
Osmoregulation

B
Excretion

C
Secretion

D
Both osmoregulation and excretion

Solution

In Euglena, the primary function of contractile vacuole is osmoregulation i.e. maintaining the proper concentration of inorganic ions and adequate amount of water in the body.
Question 8
1 / -0

Urinod is a substance that provides urine with a characteristic

A
Color

B
Odor

C
Taste

D
pH

Solution

Urine contains a bad smelling substance, urinod, due to which it has a faint aromatic odor. As soon as urea degrades to ammonia the smell becomes strong.
Question 9
1 / -0

Filtrate in the descending loop of Henle becomes hyper-tonic because

A
Na⁺ exits from it to the surrounding liquid

B
Water is absorbed by the loop

C
Water diffuses out of it to the surrounding capillaries

D
Both water and Na⁺ ions exit out to the surrounding liquid

Solution

Water diffuses out of the descending loop to the surrounding capillaries. Thus the hypertonicity of the descending loop increases.
Question 10
1 / -0

Which pair of organs have similar function?

A
Gizzard in cockroach and Renett cells in Ascaris

B
Chloragogen cells in Nereis and Choanocytes in sponges

C
Flame cells in Amphioxus and parapodia in Nereis

D
Flame cells in planaria and Cob cells in Ascaris

Solution

Both flame cells in planaria and cob cells in Ascaris have excretory function.

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Excretory Products and their Elimination Test - 5

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Excretory Products and their Elimination Test - 5

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SHARING IS CARING

Question 1

Distal convoluted tubule

Proximal convoluted tubule

Ascending loop of Henle

Descending loop of Henle

Solution

Question 2

Urea

Glucose

Sodium

Creatinine

Solution

Question 3

Proteins to amino acid

Purines to uric acid

ammonia to urea

Ammonia to guanine

Solution

Question 4

Earthworm

Sepia

Frog

Cockroach

Solution

Question 5

Thick ascending Loop of Henle

Distal convoluted tubule

Proximal convoluted tubule (PCT)

Collecting ducts

Solution

Question 6

Prawns

Star fish

Herdmania

Balanoglossus

Solution

Question 7

Osmoregulation

Excretion

Secretion

Both osmoregulation and excretion

Solution

Question 8

Color

Odor

Taste

pH

Solution

Question 9

Na+ exits from it to the surrounding liquid

Water is absorbed by the loop

Water diffuses out of it to the surrounding capillaries

Both water and Na+ ions exit out to the surrounding liquid

Solution

Question 10

Gizzard in cockroach and Renett cells in Ascaris

Chloragogen cells in Nereis and Choanocytes in sponges

Flame cells in Amphioxus and parapodia in Nereis

Flame cells in planaria and Cob cells in Ascaris

Solution

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Na⁺ exits from it to the surrounding liquid

Both water and Na⁺ ions exit out to the surrounding liquid