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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान इयत्ता ११

We can produce a concentrated/ dilute urine. This is facilitated by a special mechanism. Identify the mechanism.

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प्रश्न

We can produce a concentrated/ dilute urine. This is facilitated by a special mechanism. Identify the mechanism.

पर्याय

  • Reabsorption from PCT

  • Reabsorption from Collecting Duct

  • Reabsorption/Secretion in DCT

  • Counter current mechanism in Henle’s loop/Vasa recta

MCQ
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उत्तर

Counter current mechanism in Henle’s loop/Vasa recta

Explanation:

Counter current mechanism operates between the two limbs of the loop of Henle and those of vasa recta. The filtrate becomes concentrated when it moves down the descending limb but is diluted by the ascending limb.

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पाठ 19: Excretory Products and Their Elimination - Exercises [पृष्ठ १११]

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एनसीईआरटी एक्झांप्लर Biology Exemplar [English] Class 11
पाठ 19 Excretory Products and Their Elimination
Exercises | Q 14. | पृष्ठ १११

संबंधित प्रश्‍न

Define the following: 

Excretion 


Define the following: 

Excretory organs  


Fill in the blank. 

Urine contains .................... and ................. as nitrogenous waste.


One of Harry’s organs is not functioning properly. There is extra fluid build up in his body causing swelling in his ankles and feet. 

What should Harry do? Tick the correct answer.

Which of Harry’s organs is not working properly? 


Name the following:
 Animals which excrete uric acid.


Why the conversion of ammonia to urea is essential in human body?

Given below is the figure of certain organs and associated parts in the human body. Study the same and answer the question that follow:

Name the two major steps involved in the formation of the fluid that passes down the part labeled '3'.


Write the functional activity of the following structure:

Urethra


 How is urea produced?


Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:

Ammonia is converted into urea in kidney.


Column 2 is a list of items related to ideas in Column 1. Match the term in Column 2 with the suitable idea given in Column 1.

Column 1 Column 2
i Liver a basic unit of the brain
ii Ova b stimulated by light
iii Alveoli c deoxygenated blood
iv Cochlea d part of the sclera
v Vein e haploid cell
vi Neuron f blind sacs
vii Stomata g found in the kidney
viii Grana h audio receptors
    i diffusion of gases
    j breakdown of proteins
    k diploid cell

Choose the correct option.

The yellow colour of the urine is due to presence of ________.


Choose the correct option.

Urea is a product of breakdown of ______.


Circle the odd one.


Identify the wrong match


The endocrine nature of the kidney is indicated by the secretion of ______


Select the INCORRECT match.


The maximum amount of electrolytes and water (70-80%) from the glomerular filtrate is reabsorbed in which part of the nephron.


The renal cortex has a dotted appearance, and the Renal medulla has a striped appearance. Explain.


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