Excretory Products and their Elimination Test 22

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Excretory Products and their Elimination Test 22

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Weekly Quiz Competition

Question 1
1 / -0

The correct match is
I. DCT - Secretion of $$Na^+$$ and $$K^+$$ ions
II. Henle's loop - Reabsorption of glucose, water and $$Na^+$$ ions
III. Podocytes - Attached to the parietal layer of Bowmans capsule
IV. JGA - Rise in glomerular blood pressure activates it to release rennin.

A
III

B
II

C
I

D
IV

Solution

The Distal convolutes tubule(DCT) is a portion of the kidney between the loop of Henle and the collecting tubule. It is present in the renal cortex. In DCT Secretion of Na+ and K+ ions takes place.
So, the correct answer is 'DCT- Secretion of Na+ and K+ ions'.
Question 2
1 / -0

Curved portion of the Henle's loop of the Neprons are lined by

A
Ciliated epithelium

B
Cuboidal epithelium

C
Squamous epithelium

D
Columnar epithelium

Solution

A nephron is a thin walled and coiled duct with the blind proximal end. It is the basic structural and functional unit of the kidney. A loop of Henle is divided into three parts ascending loop of Henle, descending loop of Henle and the curved part of a loop of Henle. The curved portion of loop of Henle has the single layer of squamous epithelium which is impermeable to water. Thus the correct option is C.
Question 3
1 / -0

Effective filtration pressure in glomerulus is caused due to

A
Powerful pumping action of the heart

B
Secretion of adrenalin

C
Afferent arteriole in slightly larger than efferent arteriole

D
Vacuum develops in proximal convoluted tubule and sucks the blood

Solution

The arteriole that carries blood away from the glomerulus is the efferent arteriole whereas the afferent arteriole carries blood to the glomerulus. The afferent and efferent arteriole resistance exerts an opposite action. The efferent arteriole being smaller in diameter than the afferent arteriole produces a resistance to blood flow that creates a high pressure in the glomerulus leading to filtration. Thus the correct answer is option C.
Question 4
1 / -0

In the given diagram, water absorption does not occur in part labelled as

A
W

B
X

C
Y

D
Z
Solution
- In the given image, W represents Glomerulus, X represents a descending loop of Henle, Y represents the ascending loop of Henle and Z represents distal convoluted tubule.
- Glomerulus does primary filtration function. It filters waste products and fluids from the blood.
- Ascending and descending loop of Henle's primary function is absorption water and sodium chloride to maintain the concentration gradient.
- Distal convoluted tubule is involved in the reabsorption of sodium and chloride along with water to maintain homeostasis.
Thus, the correct answer is option A.
Question 5
1 / -0

If loop of Henle is absent from mammalian nephron which of the following is expected?

A
Urine will be more concentrated

B
Urine will be more diluted

C
No urine formation

D
No change in quality and quantity

Solution

The loop of Henle is a U-shaped, long tubule consisting of a descending and an ascending limb. The descending limb is highly permeable to water and the ascending limb is impermeable to water but is permeable to ions. The main function of the loop of Henle is to concentrate the urine, regulating the amount of water to be given out. Hence, the urine will be more dilute if the loop of Henle is absent from mammalian nephron.
So, the correct answer is option B.
Question 6
1 / -0

Dahlia starch is used for

A
Study of digestive enzymes

B
Study of kidney function

C
Preparation of noodles

D
Manufacture of chocolates

Solution

Dahlia starch is fructan, a food storage polysaccharides. Fructan is a polymer of fructose molecules found in roots of Dahlia. It is not metabolized by Body. So, it is used for testing the function of the kidney. It is also found in onion, garlic etc. Thus, the correct answer is B.
Question 7
1 / -0

Tadpole of Frog is

A
Ureotelic

B
Uricotelic

C
Ammonotelic

D
Aminotelic

Solution

Ammonotelic are the organisms which excrete nitrogenous wastes in the form of ammonia while ureotelic animals excrete nitrogenous wastes in the form of urea.since tadpole is an amphibian it is an ammonotelic animal. Tadpoles are aquatic animals. therefore there is no problem of water conservation for them.hence they can easily eliminate the excess ammonia from their body.
Ammonia is more toxic than urea and needs lots of water to excrete from the body.
So the correct answer is 'Ammonotelic.'
Question 8
1 / -0

Proximal and distal convoluted tubules are consituents of.

A
Nephron

B
Vas deferens

C
Oviduct

D
Intestine

Solution

The correct answer is option A (Nephron)
Nephron is considered the structural and functional unit of kidney, each nephron has a Bowman's capsule , proximal convoluted tubule, loop of Henle, Distal convoluted tubule and collecting duct.
Question 9
1 / -0

Kidney of adult rabbit is

A
Pronephros

B
Metanephros

C
Mesonephros

D
Opisthonephros

Solution

The metanephric kidneys are a paired compact organ whose functional units are nephrons. The nephrons filter initial urine from the blood, reabsorbing water and nutrients, and secrete wastes, producing the final urine, which is expelled. The kidney of adult rabbit is metanephros type.
So, the correct answer is 'Metanephros'.
Question 10
1 / -0

Earthworms are

A
Ureotelic when plenty of water is available

B
Uricotelic when plenty of water is available

C
Uricotelic under conditions of water scarcity

D
Ammonotelic when plenty of water is available
Solution
Correct Answer: D
Explanation:
In earthworms, nephridia are present as excretory organs.
An earthworm is ureotelic in nature, releases urea as nitrogenous excretory waste during dry conditions(water scarcity).
But when moisture is more, then it becomes ammonotelic, releases ammonia as an excretory product.
Hence, the correct answer is Ammonotelic when plenty of water is available.

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Excretory Products and their Elimination Test 22

Result

Excretory Products and their Elimination Test 22

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SHARING IS CARING

Question 1

III

II

I

IV

Solution

Question 2

Ciliated epithelium

Cuboidal epithelium

Squamous epithelium

Columnar epithelium

Solution

Question 3

Powerful pumping action of the heart

Secretion of adrenalin

Afferent arteriole in slightly larger than efferent arteriole

Vacuum develops in proximal convoluted tubule and sucks the blood

Solution

Question 4

W

X

Y

Z

Solution

Question 5

Urine will be more concentrated

Urine will be more diluted

No urine formation

No change in quality and quantity

Solution

Question 6

Study of digestive enzymes

Study of kidney function

Preparation of noodles

Manufacture of chocolates

Solution

Question 7

Ureotelic

Uricotelic

Ammonotelic

Aminotelic

Solution

Question 8

Nephron

Vas deferens

Oviduct

Intestine

Solution

Question 9

Pronephros

Metanephros

Mesonephros

Opisthonephros

Solution

Question 10

Ureotelic when plenty of water is available

Uricotelic when plenty of water is available

Uricotelic under conditions of water scarcity

Ammonotelic when plenty of water is available

Solution

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