Most Expected Questions of Life Science: Excretory System! (Download PDF)

Most Important Questions of Excretory System (Download PDF)

1. Match the following -

1. a-ii, b-iv, c-i, d-iii
2. a-i, b-iii, c- ii, d-iv
3. a-iii, b-ii, c-i, d-iv
4. a-ii, b-i, c- iii, d-iv

2. Given below are some statements regarding the mechanism of urine formation in the human kidneys. Which of the following is incorrect?

1. The glomerular filtration rate in the kidney is approximately 125 ml per minute.
2. The counter-current system contributes to urine dilution
3. Tubular secretion generally takes place in PCT
4. The process of ultrafiltration is opposed by the colloidal osmotic pressure of plasma

3. Given below are some types of rules. Match each rule with their corresponding meanings-

1. Glucose         i. proximal convoluted tubule by active transport
2. Amino acids   ii. proximal convoluted tubule by passive transport
3. Chloride ion   iii. distal convoluted tubule
4. Urea             iv. Narrow ascending loop of Henle

1. a-ii, b-iii, c-i, d-iv
2. a-i, b-iii, c- ii, d-iv
3. C. a-iii, b-ii, c-i, d-iv
4. D. a-ii, b-i, c- iii, d-iv

4. Match the following -

1. a-ii, b-iv, c-i, d-iii
2. a-i, b-iii, c- ii, d-iv
3. a-iii, b-ii, c-i, d-iv
4. a-ii, b-i, c- iii, d-iv 

5. Given below are some statements regarding reabsorption processes in the human kidneys. Which of the following is correct?

1. The process of water reabsorption in descending limb of the loop and collecting duct take place in similar conditions.
2. The process of sodium reabsorption in ascending limb of loop and collecting duct take place in similar conditions.
3. The process of water reabsorption in descending limb of the loop and collecting duct take place in different conditions.
4. The process of water reabsorption in descending limb of the loop and sodium reabsorption in ascending limb of the loop takes place in similar conditions.

6. Given below are some terms related to excretion. Match each term with their corresponding meanings or examples -

1. Vasa recta                   i. counter current system
2. Sebum                        ii. glucose
3. Tubular reabsorption    iii. skin
4. Micturition                   iv. Urinary bladder

1. a-ii, b-iii, c-i, d-iv
2. a-i, b-iii, c- ii, d-iv
3. a-iii, b-ii, c-i, d-iv
4. a-ii, b-i, c- iii, d-iv

7. Given below are some statements regarding parts present in the structure of the human kidney. Which of the following is incorrect?

1. The medullary region is divided into a few conical masses known as medullary pyramids which further projects into the calyces.
2. The cortical region generally extends between the medullary pyramids as renal pelvis.
3. The renal corpuscle consists of the glomerulus and bowman’s capsule.
4. The cortical region of the kidney consists of PCT and DCT

8. Match the following -

1. a-ii, b-iv, c-i, d-iii
2. a-i, b-iii, c- ii, d-iv
3. a-iii, b-ii, c-i, d-iv
4. a-ii, b-i, c- iii, d-iv

9. Given below are some parts of human excretory system. Match each rule with their corresponding function -

1. Thin ascending limb of loop of Henle      i. reabsorption of electrolytes
2. Proximal convoluted tubule                   ii. Ultrafiltration of blood
3. Glomerulus                                          iii. Selective reabsorption
4. Collecting duct                                     iv. Reabsorption of water to form urine

1. a-ii, b-iii, c-i, d-iv
2. a-i, b-iii, c- ii, d-iv
3. a-iii, b-ii, c-i, d-iv
4. a-ii, b-i, c- iii, d-iv

10. Given below are some terms related to excretion system. Match each rule with their corresponding meanings -

1. Dysuria     i. Painful urination
2. Polyuria    ii. Deficient urine excretion
3. Oliguria    iii. Excretion of an excessive amount of urine
4. Anuria      iv. Absence of urine formation

1. a-ii, b-iii, c-i, d-iv
2. a-i, b-iii, c- ii, d-iv
3. a-iii, b-ii, c-i, d-iv
4. a-ii, b-i, c- iii, d-iv

Solutions

Solution-1

Solution-2

All the statements are correct except B. The glomerular filtration rate in kidney is approximately 125 ml per minute. The counter current system does not contribute to urine dilution instead to the osmoregulation and tubular secretion generally takes place in PCT. The process of ultrafiltration is opposed by colloidal osmotic pressure of proteins present in blood plasma. Hence, B is the correct option.

Solution-3

1. Glucose            i. proximal convoluted tubule by active transport
2. Amino acids      ii. distal convoluted tubule
3. Chloride ion      iii. proximal convoluted tubule by passive transport
4. Urea                 iv. Narrow ascending loop of henle

Solution-4

Solution-5

All the statements regarding reabsorption processes taking place in human kidney are incorrect except statement A because the process of water reabsorption in descending limb of loop and collecting duct always occur under similar conditions present in the kidney. Whereas the the process of water reabsorption in descending limb of loop and sodium reabsorption in ascending limb of loop don’t occur in same conditions. Hence, A is correct option.

Solution-6

1. Vasa recta                 i. counter current system
2. Sebum                      ii. skin
3. Tubular reabsorption  iii. glucose
4. Micturition                 iv. Urinary bladder

Solution-7

All the statements regarding parts present in the structure of the human kidney are incorrect except statement B. The medullary region is divided into a few conical masses known as medullary pyramids which further project into the calyces. The cortical region does not extend between the medullary pyramids as the renal pelvis. The renal corpuscle consists of the glomerulus and bowman’s capsule. The cortical region of the kidney consists of PCT and DCT. Hence, B is the correct option.

Solution-8

Solution-9

1. Thin ascending limb of loop of henle      i. reabsorption of electrolytes
2. Proximal convoluted tubule                   iii. Selective reabsorption
3. Glomerulus                                          ii. Ultrafiltration of blood
4. Collecting duct                                     iv. Reabsorption of water to form urine

Solution-10

1. Dysuria        i. Painful urination
2. Polyuria       ii. Excretion of an excessive amount of urine
3. Oliguria       iii. Deficient urine excretion
4. Anuria         iv. Absence of urine formation

Answer keys

1.     Ans- A

2.     Ans- B

3.     Ans- B

4.     Ans- B

5.     Ans- A

6.     Ans- B

7.     Ans- B

8.     Ans- B

9.     Ans- B

10.   Ans- B

Download Important Questions on Excretory System - Download PDF Here

Check Out: 

• Study Notes for CSIR NET Life Science - (Download PDF)
• Study Notes for CSIR NET Chemical Science - Download PDF Here!

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