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Which of the following statements is not correct?
  • a)
    Deoxygenated blood is poured into right atrium of heart.
  • b)
    The excretory units of flatworms are flame cells.
  • c)
    Human kidney has about 1 million nephridia
  • d)
    Tracheids and vessels are non -living conducting tissues.
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Which of the following statements is not correct?a)Deoxygenated blood ...
Explanation:
All are correct except option C. 
Reason:
Because of Hundreds (200 to 250 per segment) of integumentary nephridia are located throughout the earthworm's body wall (in all but the first two segments). These tiny nephridia serve to channel nitrogenous waste from inside the worm to the outside soil.
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Community Answer
Which of the following statements is not correct?a)Deoxygenated blood ...
Incorrect Statement: Human kidney has about 1 million nephridia

Explanation:

• What are Nephridia?

Nephridia are the excretory organs of invertebrates like earthworms, which help in the removal of nitrogenous waste from the body.

• Human Excretory System

The human excretory system consists of kidneys, ureters, bladder, and urethra. The functional unit of the kidney is the nephron, which filters the blood and removes waste products in the form of urine.

• Number of Nephrons in Human Kidney

Each human kidney contains approximately 1 million nephrons, not nephridia.

• Functions of Nephron

The nephron performs various functions like filtration, reabsorption, and secretion to maintain the electrolyte and acid-base balance in the body.

• Conclusion

Hence, option C - "Human kidney has about 1 million nephridia" is incorrect as the human kidney has approximately 1 million nephrons, not nephridia.
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Which of the following statements is not correct?a)Deoxygenated blood is poured into right atrium of heart.b)The excretory units of flatworms are flame cells.c)Human kidney has about 1 million nephridiad)Tracheids and vessels are non -living conducting tissues.Correct answer is option 'C'. Can you explain this answer?
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