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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

State if the following statement is true or false. Correct the statement if it is false.  

 The organs that help our body to get rid of the waste are called respiratory organs.  


Answer the following in detail.

How do skin and lungs help in excretion?


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. 

He should see a 


Match the terms in Column I with those in Column II and write down the matching pairs 

  Column I  Column II
a Bowman's Capsule  Renal artery
b Contains more CO2 and less urea  Regulates amount of water excreted 
c Anti-diuretic hormone  Renal Vein
d Contains more urea  Glomerulus 

 The diagram given below represents an organ system in the human body. Study the same and answer the questions that follow :

 Label the parts marked 2 and 4. Mention the function of part 5. 


Choose the correct answer:
Presence of RBCs in urine is called _____________


Choose the odd one out in the following series:
Glomerulus, alveoli, bronchi.


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 main organic constituents of the fluid that flows down the part labeled '3'.


Why is urine yellow in colour ?


Describe about physical properties of urine


 Draw a well-labeled diagram of the human excretory system.


Explain the Term: Urinary bladder


State the Location:

Kidneys


Multiple Choice Question: Excretion commonly involves


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.

Bowman’s capsule is located in kidney in the _______.


The left side of the heart receives oxygenated blood from ______.


Which blood vessel has largest amount of urea?


Define the following term:

Kidney


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