MCQ Pratice Test - Chapter-16-Excretory Products And Their Elimination

Instruction

Total Questions : 20

Total time :20 min

Total Marks : 20 x 3 = 60 Marks

Each Correct Question carries : 3 Marks

Each incorrect Question Carries : -1 Marks

Each Unattempted Question carry : 0 Marks

Be careful On Negative Markings

Column of Bertin is extension of

Cortex into medulla

Medulla into cortex

Renal-capsule into cortex

Renal pelvis into renal, sinus

None

Mark the inappropriate term w.r.t. the glomerular filtration.

Active process

Passive process

Non selective

Occurs due to pressure difference

None

Which is not part of renal pyramid

Loop of Henle

Peritubular capillaries

Convoluted tubules

Collecting ducts

None

Which one of the following statements in regard to the excretion by the human kidneys is correct ?

Ascending limb of loop of Henle in impermeable to electrolytes

Descending limb of loop of Henle, impermeable to water

Nearly 99% of glomerular filtrate is reabsorbed by renal tubules

Distal convoluted tubule is incapable reabsorbing 𝐻 𝐶 𝑂 3

None

Ducts of Bellini open in

Renal pyramid

Major calyx

Minor calyx

Renal sinus

None

Which of the following statements is incorrect?

Renal corpuscle, proximal convoluted tubule (PCT) and distal convoluted tubule(DCT) of the nephron are situated in the cortical region of kidney.

The medullary zone of kidney is divided into a few conical masses called medullary pyramid projecting into the calyces.

Inside the kidney the cortical region extends in between the medullary pyramids as renal pelvis.

Glomerulus along with Bowman's capsule is called the renal corpuscle.

None

Complete the following paragraph by selecting the option that correctly fills the blanks (i) - (iv).

The kidneys have built-in mechanisms for the regulation of glomerular filtration rate. One such efficient mechanism is carried out by (i). It is a special sensitive region formed by cellular modifications in the (ii) and the (iii) at the location of their contact. A fall in GFR can activate the JG cells to release (iv) which can stimulate to glomerular blood flow and thereby brings GFR back to normal.

ANF DCT Afferent arteriole Renin

ANF PCT Efferent arteriole Angiotensin

JGA PCT Efferent arteriole Angiotensinogen

JGA DCT Afferent arteriole Renin

None

The function of counter current mechanism is performed by

I. Gills

II. Kidneys

III. Intestines

IV. Lungs

II and IV only

I, II, III, and IV

I, II, and IV

I and III only

None

Connecting tubule acts as part of which organ

Kidney

Liver

Heart

Pancreas

None

10.

The filtrate from the glomerulus contains

Urea, uric acid, glucose and water

Urea and uric acid

Urea, uric acid, ammonia and water

Urea, uric acid and ammonia

None

11.

Which of the following statement is false

Nephrons perform excretion through filtration, reabsorption and secretion.

Nephridia are accessory excretory organs in Prawn

Tapeworm have excretory flame cells

Nephrons begin with Bowmen's capsule having glomerulus

None

12.

How many molecules of ammonia are required to form 8 molecules of urea?

None

13.

The nephrons discharge their urine at the

Urethra

Renal pelvis

Renal pyramid

Urinary bladder

None

14.

If kidneys fail to reabsorb water, the effect on tissue would

Take more O2 from the blood

Remain unaffected

Shrink and shrivel

Absorb water from blood plasma

None

15.

The excretory material of bony fish is

Protein

Amino acid

Urea

Ammonia

None

16.

lonosnic pathway occurs in

Guanotelism

Ammonotelism

Uricotelism

Ureotelism

None

17.

The urine under normal conditions does not contain glucose because

Glucose in glomerular filtrate is reabsorbed in the uriniferous tubules.

Glucose of blood is not filtered in the glomerulus.

Glucose in glomerular filtrate is converted into glycogen.

The normal blood sugar is fructose.

None

18.

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

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

Paramecium discharges concentrated salt solution by contractile vacuoles.

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.

None

19.

Study the following.

(i) Uricase enzyme is not found in apes and man.

(ii) Purine metabolism leads to the formation of uric acid.

(iii) In ureotelic organisms, carbondioxideCO2 and ammonia converted into urea through the Cori cycle.

(iv) More energy consumed is for the production of uric acid.

(v) TMO (Trimethylamine oxide) protects the proteins from the effect of urea in Chondrichthyes fishes.

Which of the given statements are correct?

All, except II

All, except III

All, except V

All, except IV

None

20.

Which disease is caused due to high accumulation of uric acid in the bloodstream?

Uremia

Hyperuricemia

Hypouremia

Hyperuremia

None

Chapter 14 -Breathing and Exchange of Gases

Chapter-15-Body Fluids And Circulation

Chapter-16-Excretory Products And Their Elimination

Chapter-17-Locomotion And Movement

Chapter-18-Neural Control And Coordination

Chapter-19-Chemical Coordination And Integration

Instruction

Curriculum

Ncert -Class 11 - Biology- Unit- 5-HUMAN PHYSIOLOGY

Chapter 14 -Breathing and Exchange of Gases

Chapter-15-Body Fluids And Circulation

Chapter-16-Excretory Products And Their Elimination

Chapter-17-Locomotion And Movement

Chapter-18-Neural Control And Coordination

Chapter-19-Chemical Coordination And Integration

MCQ Pratice Test – Chapter-16-Excretory Products And Their Elimination

Instruction