Respiration and Elimination of Nitrogenous Wastes
Telangana Open School (TOSS) · Class 12 · Biology
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Quick Quiz: Respiration and Elimination of Nitrogenous Wastes
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What is the main purpose of respiration in living organisms?
Which gas is primarily used by cells during cellular respiration?
Where does gaseous exchange occur in humans?
Which of the following animals excretes ammonia as its main nitrogenous waste?
Sample Questions
What is the functional unit of the kidney?
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Nephron
The nephron is the structural and functional unit of the kidney responsible for filtering blood and forming urine.
Which part of the respiratory system is also known as the voice box?
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Larynx
The larynx contains vocal cords and is involved in sound production, hence called the voice box.
In which form do mammals primarily excrete nitrogenous waste?
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Urea
Mammals are ureotelic, meaning they convert toxic ammonia into less toxic urea in the liver for excretion.
What happens to the diaphragm during inspiration?
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It contracts and flattens
During inspiration, the diaphragm contracts, becomes flat, and lowers, increasing the volume of the thoracic cavity.
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