Excretory Products and their Elimination Test 28

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Excretory Products and their Elimination Test 28

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Question 1
1 / -0

The alignment of kidney are

A
At the level of ovaries

B
At the same level

C
Left kidney at a higher level than the right one

D
Right kidney at a higher level than the left one

Solution

The human excretory system is composed of one pair of kidneys. Anatomically the two kidneys lie at different levels i.e left kidney at a higher level than the right kidney because the liver is present on the right side of the body.
So, the correct answer is 'Left kidney at a higher level than the right one'.
Question 2
1 / -0

Characteristic of metanephric kidney is

A
Hypotonic urine

B
Uric acid formation

C
Loop of Henle

D
Hormone production

Solution

Functional kidney of mammals is Metanephros type. 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 characteristic of the metanephric kidney is the presence of a loop of Henle. The long loop of Henle helps to minimize water loss and maximize reabsorption
So, the correct answer is 'Loop of Henle'.
Question 3
1 / -0

Functional kidney of tadpole in Frog is

A
Pronephros

B
Mesonephros

C
Metanephros

D
Archinephros

Solution

Proenphrons is a paired organ, consisting of a single giant nephron that processes blood filtrate produced from glomeruli. The filtrate is deposited into the coelom. It is a functional kidney of the tadpole in the frog. The pronephros is developed to mesonephros in the adult frog. In the adult frog, the functional kidney is mesonephros type. Hence functional kidney of the tadpole in frog is Pronephros.
So, the correct answer is 'Pronephros'.
Question 4
1 / -0

Ducts of Bellini are found in

A
Liver

B
Intestine

C
Medulla oblongata

D
Kidney

Solution

The most distal portion of collecting duct is called as ducts of Bellini. They receive renal filtrate from several collecting ducts and open into the minor calyx.
So, the correct answer is 'Kidney'.
Question 5
1 / -0

Match the following and pick the correct combination.

LIST I LIST II
A Kupffer Cells 1 Small intestine
B $$\beta$$ cells 2 PCT
C Brush border cell 3 Liver sinusoids
D Paneth cells 4 Pituitary
5 Islets Langerhans

A
A- 5, B- 3, C- 2, D- 1

B
A- 3, B- 5, C- 2, D- 1

C
A- 2, B- 5, C- 1, D- 3

D
A- 1, B- 2, C- 3, D- 5

Solution

(A) Kuffer cells - (3) Liver sinusoids -These are macrophages present in liver, lining the liver sinusoids
(B) β cells - (5) Islets of Langerhans -Islets of Langerhans are the tiny cluster of cells present in the pancreas.The β cells of islets of Langerhans produce insulin hormone.
(C) Brush border cell - (2) PCT - PCT is lined by simple cuboidal brush border epithelium which increases the surface area for reabsorption.
(D) Paneth cells - (1) Small intestine - Paneth cells are present at the bottom of the crypts of the intestine. They help in defence by producing antimicrobial peptides.
So, the correct answer is 'A-3, B-5, C-2, D-1'.
Question 6
1 / -0

The cells named podocytes occur in

A
Inner wall of Bowman's capsule

B
Outer wall of Bowmans capsule

C
Large intestine

D
Neck region of nephrons

Solution

Podocytes cells are the cells which occur in the visceral layer of the Bowman's capsule. These are specialized epithelial cells that reside in the visceral layer of the capsule. It plays an important role in glomerular filtration. It combines with the endothelial cells of the glomerular capillary loop and the glomerular basement membrane they help to filter the blood. The glomerular filtrate contains water, glucose, salts and urea.
So, the correct answer is 'Inner wall of Bowman's capsule'.
Question 7
1 / -0

Number of nephrons in each kidney of man is

A
0.7 million

B
0.9 million

C
1.2 million

D
1.6 million

Solution

The human excretory system is composed of one pair of kidneys. The nephron is the structural and functional unit of the kidney. The body of the nephron is divided into renal corpuscle (glomerulus and its surrounding Bowman's capsule), PCT, Henle's loop and DCT. Each kidney of man has about 1.2 million nephrons.
So, the correct answer is '1.2 million'.
Question 8
1 / -0

Ureotelic animals

A
Lack urease

B
Do not excrete urea

C
Cannot form uric acid

D
Live in water

Solution

The animals which excrete urea as excretory waste are called as ureotelic animals. For example, cartilaginous fished, adult amphibians, mammals including humans are ureotelic. The ureotelic animals lack urease enzyme, the enzyme which breaks urea into ammonia and carbon dioxide. The urease enzyme is present in bacteria, fungi and algae.
So, the correct answer is 'Lack urease'.
Question 9
1 / -0

Vital morphological and physiological units of mammalian kidney are

A
Ureters

B
Seminiferous tubules

C
Uriniferous tubules

D
Nephridia

Solution

The nephron is the structural and functional unit of the kidney. The body of the nephron is divided into renal corpuscle, PCT, Henle's loop and DCT.which perform the vital functions such as filtration, reabsorption, and secretion. Nephron along with collecting ducts are called as uriniferous tubules. Hence Vital morphological and physiological units of the mammalian kidney are Uriniferous tubules'
So, the correct answer is 'Uriniferous tubules'.
Question 10
1 / -0

In kidney, nephrostomes are functional in

A
Tadpole

B
Adult Frog

C
Cockroach

D
Rabbit

Solution

The excretory system of frog consists of a pair of kidney, ureters, urinary bladder and cloaca. On the ventral surface of the kidney in the frog, there are ciliated funnels present called as nephrostome. The nephrostome is internally lined with cilia, its function is to push water, metabolic wastes and other substances into metanephridium (Kidney). The nephrostomes are functional in tadpole stage of life cycle.
So, the correct answer is 'Tadpole'

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	LIST I		LIST II
A	Kupffer Cells	1	Small intestine
B	$$\beta$$ cells	2	PCT
C	Brush border cell	3	Liver sinusoids
D	Paneth cells	4	Pituitary
		5	Islets Langerhans

Excretory Products and their Elimination Test 28

Result

Excretory Products and their Elimination Test 28

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SHARING IS CARING

Question 1

At the level of ovaries

At the same level

Left kidney at a higher level than the right one

Right kidney at a higher level than the left one

Solution

Question 2

Hypotonic urine

Uric acid formation

Loop of Henle

Hormone production

Solution

Question 3

Pronephros

Mesonephros

Metanephros

Archinephros

Solution

Question 4

Liver

Intestine

Medulla oblongata

Kidney

Solution

Question 5

A- 5, B- 3, C- 2, D- 1

A- 3, B- 5, C- 2, D- 1

A- 2, B- 5, C- 1, D- 3

A- 1, B- 2, C- 3, D- 5

Solution

Question 6

Inner wall of Bowman's capsule

Outer wall of Bowmans capsule

Large intestine

Neck region of nephrons

Solution

Question 7

0.7 million

0.9 million

1.2 million

1.6 million

Solution

Question 8

Lack urease

Do not excrete urea

Cannot form uric acid

Live in water

Solution

Question 9

Ureters

Seminiferous tubules

Uriniferous tubules

Nephridia

Solution

Question 10

Tadpole

Adult Frog

Cockroach

Rabbit

Solution

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