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Excretion In Animals & Plants - 2 - SSS 1 MCQ


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15 Questions MCQ Test - Excretion In Animals & Plants - 2

Excretion In Animals & Plants - 2 for SSS 1 2024 is part of SSS 1 preparation. The Excretion In Animals & Plants - 2 questions and answers have been prepared according to the SSS 1 exam syllabus.The Excretion In Animals & Plants - 2 MCQs are made for SSS 1 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Excretion In Animals & Plants - 2 below.
Solutions of Excretion In Animals & Plants - 2 questions in English are available as part of our course for SSS 1 & Excretion In Animals & Plants - 2 solutions in Hindi for SSS 1 course. Download more important topics, notes, lectures and mock test series for SSS 1 Exam by signing up for free. Attempt Excretion In Animals & Plants - 2 | 15 questions in 20 minutes | Mock test for SSS 1 preparation | Free important questions MCQ to study for SSS 1 Exam | Download free PDF with solutions
Excretion In Animals & Plants - 2 - Question 1
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How does an artificial kidney function in removing waste products from the blood?

Detailed Solution for Excretion In Animals & Plants - 2 - Question 1

Artificial kidneys remove waste products through dialysis by diffusion.

Excretion In Animals & Plants - 2 - Question 2
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Which of the following substances is NOT typically reabsorbed by the nephrons?

Detailed Solution for Excretion In Animals & Plants - 2 - Question 2
The nephrons selectively reabsorb glucose, amino acids, and water from the filtrate, but urea is not reabsorbed. Instead, urea remains in the filtrate to be excreted as urine. The reabsorption process helps the body retain essential nutrients and regulate water balance.
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Excretion In Animals & Plants - 2 - Question 3
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What is the primary role of the ureters in the excretory system?

Detailed Solution for Excretion In Animals & Plants - 2 - Question 3
The ureters are tubes that carry urine from the kidneys to the urinary bladder. They play a crucial role in transporting the urine formed in the kidneys to the bladder, where it is stored until it is eventually expelled from the body.
Excretion In Animals & Plants - 2 - Question 4
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In which part of the plant are waste products like resins and gums commonly stored?
Detailed Solution for Excretion In Animals & Plants - 2 - Question 4
Resins and gums, which are waste products in plants, are commonly stored in the old xylem. This storage helps to prevent the accumulation of waste in the active parts of the plant and allows the plant to manage waste effectively.
Excretion In Animals & Plants - 2 - Question 5
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What is the process by which plants primarily eliminate excess water?
Detailed Solution for Excretion In Animals & Plants - 2 - Question 5
Plants primarily eliminate excess water through transpiration. This process involves the movement of water from the soil through the plant and its evaporation from the leaves and other aerial parts. Transpiration helps regulate water balance and cool the plant.
Excretion In Animals & Plants - 2 - Question 6
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Which statement accurately describes the process of hemodialysis?
Detailed Solution for Excretion In Animals & Plants - 2 - Question 6
Hemodialysis is a medical procedure that uses an artificial device to mimic the filtering function of the kidneys. It helps remove waste products and excess fluids from the blood when the kidneys are not functioning properly.
Excretion In Animals & Plants - 2 - Question 7
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How do unicellular organisms typically remove metabolic wastes?
Detailed Solution for Excretion In Animals & Plants - 2 - Question 7
Many unicellular organisms remove metabolic wastes through simple diffusion. This process allows waste products to pass from areas of higher concentration inside the cell to areas of lower concentration outside the cell.
Excretion In Animals & Plants - 2 - Question 8
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What is the role of the urinary bladder in the excretory system?
Detailed Solution for Excretion In Animals & Plants - 2 - Question 8
The urinary bladder functions as a storage organ for urine produced by the kidneys. It holds urine until it is expelled from the body through the urethra. The bladder is muscular and expands as it fills with urine.
Excretion In Animals & Plants - 2 - Question 9
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Which substance in the blood is removed during the dialysis process?
Detailed Solution for Excretion In Animals & Plants - 2 - Question 9
During dialysis, urea, a nitrogenous waste product, is removed from the blood. Dialysis helps to perform the filtering function of the kidneys in patients with kidney failure by removing waste and excess fluids.
Excretion In Animals & Plants - 2 - Question 10
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What is the basic unit of filtration in the kidney that contains a cluster of capillaries?
Detailed Solution for Excretion In Animals & Plants - 2 - Question 10
The glomerulus is a network of capillaries within the nephron that performs the initial filtration of blood. It is surrounded by Bowman’s capsule, which collects the filtered urine. The glomerulus plays a crucial role in filtering waste products from the blood.
Excretion In Animals & Plants - 2 - Question 11
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During which process do the kidneys adjust the concentration of urine based on the body's hydration levels?
Detailed Solution for Excretion In Animals & Plants - 2 - Question 11
The kidneys adjust the concentration of urine through the process of reabsorption. During this process, the kidneys selectively reabsorb water and other essential substances from the filtrate based on the body's hydration levels. This regulation ensures that the body maintains a proper balance of water and electrolytes, adapting to varying levels of hydration.
Excretion In Animals & Plants - 2 - Question 12
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What is the primary function of the counter-current mechanism in the nephron?
Detailed Solution for Excretion In Animals & Plants - 2 - Question 12
The counter-current mechanism in the nephron primarily functions to concentrate urine by creating a concentration gradient in the medulla of the kidney. This gradient is established by the counter-current flow of fluids in the ascending and descending limbs of the loop of Henle, which facilitates the reabsorption of water and concentrates the urine.
Excretion In Animals & Plants - 2 - Question 13
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(i) Each nephron consists of a cup-shaped structure called Bowman’s capsule.

(ii) Kidneys perform osmoregulation by maintaining the right amount of water and ionic balance in the body.

(iii) Urine passes from the kidneys to the urethra directly.

(iv) The process of purifying the blood by an artificial kidney is called hemodialysis.

The correct statements are :
Detailed Solution for Excretion In Animals & Plants - 2 - Question 13
  • (i) Each nephron consists of a cup-shaped structure called Bowman’s capsule.
  • (ii) Kidneys perform osmoregulation by maintaining the right amount of water and ionic balance in the body.
  • (iii) is incorrect because urine passes from the kidneys to the urinary bladder through the ureters, not directly to the urethra.
  • (iv) The process of purifying the blood by an artificial kidney is called hemodialysis.
Excretion In Animals & Plants - 2 - Question 14
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Choose the correctly matched pair.
Detailed Solution for Excretion In Animals & Plants - 2 - Question 14
  • Option A: Bowman’s capsule - Collecting duct
    • This is incorrect. The Bowman’s capsule is part of the nephron and contains the glomerulus, which is involved in the initial filtration of blood. The collecting duct is a different part of the nephron that collects urine from multiple nephrons. They are not the same structure.
  • Option B: Glomerulus - Capillaries
    • This is correct. The glomerulus is a network of capillaries located within the Bowman’s capsule of the nephron. It is the site where blood filtration begins.
  • Option C: Ureter - Filters blood
    • This is incorrect. The ureter is a tube that carries urine from the kidney to the urinary bladder. It does not play a role in filtering blood.
  • Option D: Urethra - Stores urine
    • This is incorrect. The urethra is the tube that carries urine from the urinary bladder to the outside of the body. It does not store urine; the urinary bladder is the organ responsible for storing urine.
  • Thus, the correctly matched pair is Option B: Glomerulus - Capillaries.
Excretion In Animals & Plants - 2 - Question 15
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Assertion (A): The human excretory system is responsible for maintaining the right amount of water and ionic balance in the body.

Reason (R): Kidneys perform osmoregulation in addition to filtering nitrogenous waste from the blood.
Detailed Solution for Excretion In Animals & Plants - 2 - Question 15
  • Assertion: In this scenario, the Assertion is true as the kidneys do indeed play a vital role in osmoregulation, which involves maintaining the right balance of water and ions in the body.
  • Reason: The Reason is also true since it correctly states that one of the main functions of the kidneys is osmoregulation along with filtering nitrogenous waste from the blood. Moreover, the Reason serves as a valid explanation for the Assertion, as the maintenance of water and ionic balance is directly linked to the osmoregulatory function of the kidneys.
  • Hence, Option A is the correct answer.
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