In human beings, excretory products in the form of soluble nitrogen compounds are removed by the _______ in the kidneys.

Correct option is D

Correct Answer: (d) Nephrons
Explanation:
· Nephrons are the structural and functional units of the kidneys that filter blood and remove excretory products in the form of soluble nitrogen compounds like urea, creatinine, and ammonia.
· Each kidney contains millions of nephrons, which work to maintain the body’s fluid and electrolyte balance.
Other Options:
· Nucleus: The nucleus is the control center of a cell and is not involved in excretion.
· Nutrition: Nutrition refers to the process of obtaining and utilizing nutrients, unrelated to excretion.
· Mitochondria: Mitochondria are responsible for cellular respiration and energy production, not excretory processes.