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

Which of the following statements is incorrect?

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

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

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

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

None

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

Descending limb of loop of Henle, impermeable to water

Distal convoluted tubule is incapable reabsorbing 𝐻 𝐶 𝑂 3

Nearly 99% of glomerular filtrate is reabsorbed by renal tubules

Ascending limb of loop of Henle in impermeable to electrolytes

None

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

Non selective

Passive process

Occurs due to pressure difference

Active process

None

The nephrons discharge their urine at the

Urethra

Renal pelvis

Urinary bladder

Renal pyramid

None

Connecting tubule acts as part of which organ

Liver

Kidney

Heart

Pancreas

None

Which is not part of renal pyramid

Convoluted tubules

Loop of Henle

Collecting ducts

Peritubular capillaries

None

The filtrate from the glomerulus contains

Urea, uric acid, ammonia and water

Urea, uric acid and ammonia

Urea and uric acid

Urea, uric acid, glucose and water

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.

JGA PCT Efferent arteriole Angiotensinogen

JGA DCT Afferent arteriole Renin

ANF DCT Afferent arteriole Renin

ANF PCT Efferent arteriole Angiotensin

None

The excretory material of bony fish is

Urea

Ammonia

Amino acid

Protein

None

10.

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

Shrink and shrivel

Take more O2 from the blood

Absorb water from blood plasma

Remain unaffected

None

11.

lonosnic pathway occurs in

Guanotelism

Uricotelism

Ureotelism

Ammonotelism

None

12.

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

Paramecium discharges concentrated salt solution by contractile vacuoles.

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

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

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

None

13.

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 IV

All, except III

All, except V

None

14.

Which of the following statement is false

Nephridia are accessory excretory organs in Prawn

Tapeworm have excretory flame cells

Nephrons perform excretion through filtration, reabsorption and secretion.

Nephrons begin with Bowmen's capsule having glomerulus

None

15.

Ducts of Bellini open in

Minor calyx

Major calyx

Renal pyramid

Renal sinus

None

16.

Column of Bertin is extension of

Renal-capsule into cortex

Cortex into medulla

Medulla into cortex

Renal pelvis into renal, sinus

None

17.

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

Hypouremia

Hyperuremia

Hyperuricemia

Uremia

None

18.

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

None

19.

The urine under normal conditions does not contain glucose because

Glucose in glomerular filtrate is converted into glycogen.

The normal blood sugar is fructose.

Glucose of blood is not filtered in the glomerulus.

Glucose in glomerular filtrate is reabsorbed in the uriniferous tubules.

None

20.

The function of counter current mechanism is performed by

I. Gills

II. Kidneys

III. Intestines

IV. Lungs

I and III only

I, II, III, and IV

I, II, and IV

II and IV only

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