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The following substances are the excretory products in animals. Choose the least toxic form among them?

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प्रश्न

The following substances are the excretory products in animals. Choose the least toxic form among them?

पर्याय

  • Urea

  • Uric acid

  • Ammonia

  • Carbon dioxide

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उत्तर

Ammonia

Explanation:

Ammonia is the most toxic form and requires a large amount of water for its elimination, whereas uric acid, being the least toxic, can be removed with a minimum loss of water.

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पाठ 19: Excretory Products and Their Elimination - Exercises [पृष्ठ १०८]

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एनसीईआरटी एक्झांप्लर Biology [English] Class 11
पाठ 19 Excretory Products and Their Elimination
Exercises | Q 1. | पृष्ठ १०८

संबंधित प्रश्‍न

What is meant by the term osmoregulation?


Reabsorption of water from distal parts of the tubules is facilitated by hormone ______.


Add a noteon composition of urine.


Fill in the blank : 

Evaporation of sweat from the skin surface has ............... effect.


Where in the urinary system do the following processes take place?

  1. Urine formation: ______.
  2. Transport of urine away from kidney: ______.
  3. Temporary storage of urine: ______.

What is meant by osmoregulation?


Fill in the blank. 

........................ is found in the seeds of poppy plants.


Write the functional activity of the following structure: Bowman’s capsule


Mention any two vital functions of human kidney


Identify the biological term

A ball of inter twined capillaries.


Identify the biological term

Consists of the kidneys, ureters and bladder.


With regards to toxicity and the need for dilution in water, how different are ureotelic and uricotelic excretions? Give examples of animals that use these types of excretion?


What is tubular secretion? Name the substances secreted through the renal tubules.


The human kidney is histologically divided into ____________.


Proximal convoluted tubule differs from distal convoluted tubule being lined by ______ 


The osmotic pressure of blood that opposes ultrafiltration is about ______ mm Hg. 


Filtration of the blood takes place at ______. 


What are the main processes of urine formation?


Name the following:

Three stages of urine formation.


Write full form of the following abbreviation:

DCT


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