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

The function of counter current mechanism is performed by

I. Gills

II. Kidneys

III. Intestines

IV. Lungs

I, II, III, and IV

II and IV only

I and III only

I, II, and IV

None

Column of Bertin is extension of

Medulla into cortex

Renal pelvis into renal, sinus

Cortex into medulla

Renal-capsule into cortex

None

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

Non selective

Passive process

Occurs due to pressure difference

Active process

None

Which is not part of renal pyramid

Collecting ducts

Convoluted tubules

Peritubular capillaries

Loop of Henle

None

The nephrons discharge their urine at the

Renal pelvis

Urethra

Renal pyramid

Urinary bladder

None

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

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

Hypouremia

Hyperuremia

Hyperuricemia

Uremia

None

The excretory material of bony fish is

Urea

Ammonia

Amino acid

Protein

None

lonosnic pathway occurs in

Ammonotelism

Ureotelism

Uricotelism

Guanotelism

None

10.

The urine under normal conditions does not contain glucose because

Glucose of blood is not filtered in the glomerulus.

Glucose in glomerular filtrate is reabsorbed in the uriniferous tubules.

The normal blood sugar is fructose.

Glucose in glomerular filtrate is converted into glycogen.

None

11.

Ducts of Bellini open in

Renal pyramid

Major calyx

Minor calyx

Renal sinus

None

12.

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 DCT Afferent arteriole Renin

ANF DCT Afferent arteriole Renin

ANF PCT Efferent arteriole Angiotensin

JGA PCT Efferent arteriole Angiotensinogen

None

13.

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

Shrink and shrivel

Remain unaffected

Take more O2 from the blood

Absorb water from blood plasma

None

14.

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

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.

Paramecium discharges concentrated salt solution by contractile vacuoles.

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

None

15.

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

None

16.

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.

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

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.

None

17.

Which of the following statement is false

Tapeworm have excretory flame cells

Nephridia are accessory excretory organs in Prawn

Nephrons perform excretion through filtration, reabsorption and secretion.

Nephrons begin with Bowmen's capsule having glomerulus

None

18.

Connecting tubule acts as part of which organ

Heart

Kidney

Pancreas

Liver

None

19.

The filtrate from the glomerulus contains

Urea and uric acid

Urea, uric acid, ammonia and water

Urea, uric acid, glucose and water

Urea, uric acid and ammonia

None

20.

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

Nearly 99% of glomerular filtrate is reabsorbed by renal tubules

Descending limb of loop of Henle, impermeable to water

Ascending limb of loop of Henle in impermeable to electrolytes

Distal convoluted tubule is incapable reabsorbing 𝐻 𝐶 𝑂 3

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