NEET-UG Biology · Class 11
Nitrogen wastes and excretory organs in animals — NEET & JEE Questions
Nitrogen wastes and excretory organs in animals is a topic in Excretory Products and their Elimination, a Class 11 Biology chapter of the NEET-UG syllabus. TestBudy holds 16 published NEET-UG questions on Nitrogen wastes and excretory organs in animals, each with the marking scheme of the real paper. The ideas it examines include Which animals excrete ammonia, urea or uric acid, Excretory organs of earthworm, insect and prawn.
- questions
- 16
- shown here
- 10
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Key formulas and concepts
The ideas Nitrogen wastes and excretory organs in animals is examined on, as they are tagged in the syllabus tree.
- Which animals excrete ammonia, urea or uric acid
- Excretory organs of earthworm, insect and prawn
Nitrogen wastes and excretory organs in animals MCQs with solutions
10 of the 16 published questions on this topic, exactly as they appear in a test. Answers and worked solutions come with your result rather than on this page.
Excretion mainly as ammonia is called:
- A. osmoregulation
- B. ammonotelism
- C. uricotelism
- D. ureotelism
Excretion mainly as urea is called:
- A. ammonotelism
- B. micturition
- C. ureotelism
- D. uricotelism
Excretion mainly as uric acid is called:
- A. ammonotelism
- B. ureotelism
- C. uricotelism
- D. filtration
Which nitrogenous waste is the principal excretory product of most mammals?
- A. Uric acid
- B. Ammonia
- C. Urea
- D. Carbon dioxide
Animals that excrete ammonia as their main nitrogenous waste are called what?
- A. Osmoconformers
- B. Ureotelic
- C. Uricotelic
- D. Ammonotelic
Why is uric acid advantageous as a nitrogenous waste in many terrestrial animals that must conserve water?
- A. It can be excreted as a semisolid paste with very little water
- B. It is more soluble than ammonia
- C. It requires no metabolic energy to produce
- D. It is released directly through the lungs
Which excretory structure is characteristic of flatworms such as Planaria?
- A. Nephridia
- B. Flame cells
- C. Malpighian tubules
- D. Green glands
Animals that excrete ammonia as their major nitrogenous waste are described as
- A. ammonotelic
- B. ureotelic
- C. uricotelic
- D. osmoconforming only
An animal converts toxic ammonia into a less toxic compound before excretion and can therefore use less water than an ammonotelic animal. Which waste is most likely produced?
- A. Carbon dioxide
- B. Ammonia
- C. Urea
- D. Molecular nitrogen
Which pairing of animal group and excretory structure is correct?
- A. Crustaceans — kidneys identical to mammals
- B. Earthworms — flame cells
- C. Flatworms — nephridia
- D. Insects — Malpighian tubules
Common mistakes in Nitrogen wastes and excretory organs in animals
Recorded against questions in this topic that are not shown above, so none of these points at an answer you can see on this page.
- Focusing only on toxicity and overlooking the contrasting water requirements.
- Assumes terrestrial animals always excrete uric acid.
- Assumes the least soluble nitrogen waste requires the most water for excretion.
- Swaps characteristic excretory structures among major animal groups.
- Assigns annelid or flatworm excretory structures to insects.
- Ranks wastes only by chemical complexity and ignores toxicity and water requirement.
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