NEET Biology
Excretory Products and their Elimination
Question 1:
Identify the group of organisms which are ureotelic. [Level: Moderate]
(a) Fishes, aquatic amphibians and mammals
(b) Mammals, birds and terrestrial amphibians
(c) Land snails, reptiles and birds
(d) Terrestrial amphibians, mammals and marine fishes
Question 2:
The excretory structures seen in members of phylum Platyhelminthes are: [Level: Moderate]
(a) flame cells
(b) nephridia
(c) green glands
(d) malpighian tubules
Question 3:
The location of kidneys is between: [Level: Moderate]
(a) T7-L3
(b) T12-L3
(c) C4-T3
(d) C7-L5
Question 4:
Ureters open into the kidneys as a broad funnel shaped space called: [Level: Easy]
(a) renal medulla
(b) renal pelvis
(c) renal calyces
(d) renal Columns of Bertini
Question 5:
Capillaries formed after the branching of the efferent arteriole are called: [Level: Moderate]
(a) glomerular capillaries
(b) peritubular capillaries
(c) peripheral capillaries
(d) perinephric capillaries
Question 6:
Renal corpuscle comprises of: [Level: Easy]
(a) Bowman’s capsule and PCT
(b) glomerulus and DCT
(c) glomerulus and Bowman’s capsule
(d) Bowman’s capsule and DCT
Question 7:
Which among the following segments of nephron lies in the renal cortex? [Level: Moderate]
(a) PCT, Henle’s loop and DCT
(b) Malpighian body, Henle’s loop and DCT
(c) Malpighian body, PCT, Henle’s loop and DCT
(d) Malpighian body, PCT and DCT
Question 8:
Podocytes are: [Level: Moderate]
(a) epithelial cells of the glomerular capillaries
(b) cells of the glomerular endothelium
(c) epithelial cells of the Bowman’s capsule
(d) cells of the renal tubule
Question 9:
A special sensitive region formed by the cellular modifications in the DCT and the afferent arteriole at the location of their contact is called: [Level: Easy]
(a) juxta-medullary apparatus
(b) juxta-glomerular apparatus
(c) cortico-medullary apparatus
(d) glomerulo-medullary apparatus
Question 10:
Identify the correct statement. [Level: Difficult]
(a) 99% nutrients, 70-80% electrolytes and water are reabsorbed in the DCT.
(b) The descending limb of Henle’s loop is impermeable to water.
(c) In DCT, conditional reabsorption of K+, HCO3- and NH4+ takes place.
(d) Collecting ducts allow passage of small amount of urea into the medullary interstitium to keep up the osmolarity.
Question 11:
Which among the following statements regarding the production of concentrated urine is incorrect? [Level: Moderate]
(a) Counter-current mechanism is responsible for the production of concentrated urine in mammals.
(b) The flow of fluids in both the arms of the Henle’s loop and vasa recta are in the opposite direction forming the counter current.
(c) Concentrated urine production is facilitated by the hyperosmolar condition of the medullary interstitium.
(d) Hyperosmolarity of the cortical interstitium is maintained by solutes like NaCl and Urea.
Question 12:
A hormone released from the posterior pituitary which helps in the conditional reabsorption of water in the DCT and the collecting ducts is: [Level: Moderate]
(a) atrial natriuretic factor
(b) anti-diuretic hormone
(c) renin
(d) angiotensinogen
Question 13:
Which among the following set of conditions favours the activation of Renin-Angiotensin mechanism? [Level: Difficult]
I. High blood pressure
II. Low blood volume
III. Low Na+ ion concentration
IV. High Cl- ion concentration
(a) I and III
(b) II and IV
(c) II and III
(d) I and IV
Question 14:
Glycosuria and ketonuria are indicative of: [Level: Moderate]
(a) diabetes insipidus
(b) diabetes mellitus
(c) hypoglycaemia
(d) hyperkalaemia
Question 15:
Given below are the steps involved in the process of haemodialysis. Study the same and arrange the given steps in the correct order: [Level: Difficult]
I. An anticoagulant like heparin is added to the blood.
II. Blood is drained into the artificial kidney.
III. Blood from the patient is taken out through a suitable artery.
IV. The blood is allowed to pass through the dialysing unit where the nitrogenous wastes move out freely into the dialysing fluid.
V. Anti-heparin is added and the cleared blood is pumped into the patient’s body.
(a) III – II – I – V – IV
(b) III – I – II – IV – V
(c) III – I – IV – II – V
(d) III – V – II – IV – I
Question 16:
Identify the incorrect statement with respect to the process of ultrafiltration. [Level: Difficult]
(a) About 1100-1200 ml of blood is filtered by the kidneys per minute.
(b) Ultrafiltration occurs through the filtration membrane which comprises of the glomerular endothelium, basement membrane and the epithelium of the Bowman’s capsule.
(c) During glomerular filtration, almost all of the plasma constituents are filtered out except the proteins.
(d) Glomerular filtration is a highly selective process taking place across the filtration process.
Question 17:
Match the items given in Column I to Column II and find the correct answer from the options given below: [Level: Difficult]
Column I |
Column II |
1. Uricotelism |
(i) Potassium and bicarbonate ions |
2. Ureotelism |
(ii) Terrestrial amphibians |
3. Selective reabsorption |
(iii) Reptiles |
4. Tubular secretion |
(iv) Sodium ions and glucose molecules |
|
1. |
2. |
3. |
4. |
(a) |
(iii) |
(ii) |
(iv) |
(i) |
(b) |
(ii) |
(iii) |
(iv) |
(i) |
(c) |
(iii) |
(ii) |
(i) |
(iv) |
(d) |
(ii) |
(iii) |
(iv) |
(i) |
Question 18:
Which among the following correctly indicate the composition of sebum? [Level: Moderate]
(a) NaCl, urea and lactic acid
(b) Water, NaCl and urea
(c) Hydrocarbons, waxes and NaCl
(d) Sterols, waxes and hydrocarbons
Question 19:
The term given to the process of release of urine from the urinary bladder is called: [Level: Easy]
(a) expulsion
(b) defaecation
(c) micturition
(d) egestion
Question 20:
Which among the following disorders related to the excretory system is characterized by the formation of insoluble mass of crystallised salts in the kidneys? [Level: Easy]
(a) Glomerulonephritis
(b) Uremia
(c) Gout
(d) Renal calculi
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