Describe the role of liver, lungs and sk | Class 11 Biology Chapter Excretory products and their Elimination, Excretory products and their Elimination NCERT Solutions

Question:

Describe the role of liver, lungs and skin in excretion.

Answer:

Liver, lungs, and skin also play an important role in the process of excretion.

Role of the liver:

Liver is the largest gland in vertebrates. It helps in the excretion of cholesterol, steroid hormones, vitamins, drugs, and other waste materials through bile. Urea is formed in the liver by the ornithine cycle. Ammonia – a toxic substance – is quickly changed into urea in the liver and then eliminated from the body. Liver also changes the decomposed haemoglobin pigment into bile pigments called bilirubin and biliverdin.

Role of the lungs:

Lungs help in the removing waste materials such as carbon dioxide from the body.

Role of the skin:

Skin has many glands which help in excreting waste products through pores. It has two types of glands – sweat and sebaceous glands.

Sweat glands are highly vascular and tubular glands that separate the waste products from the blood and excrete them in the form of sweat. Sweat excretes excess salt and water from the body.

Sebaceous glands are branched glands that secrete an oily secretion called sebum.


Study Tips for Answering NCERT Questions:

NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:

  • Read the question carefully and focus on the core concept being asked.
  • Reference examples and data from the chapter when answering questions about Excretory products and their Elimination.
  • Review previous year question papers to get an idea of how such questions may be framed in exams.
  • Practice answering questions within the time limit to improve your speed and accuracy.
  • Discuss your answers with your teachers or peers to get feedback and improve your understanding.

Comments

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  • 2019-12-28 21:49:04

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  • Ankur borkotaky
  • 2019-11-10 18:41:18

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  • Kritika
  • 2019-08-23 00:37:08

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  • Deepak pal
  • 2019-03-28 11:44:10

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  • 2019-03-28 11:39:25

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  • 2019-03-06 11:23:38

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  • 2019-01-05 08:21:09

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  • 2019-01-05 08:20:39

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  • Sneha bisht
  • 2018-04-18 07:32:07

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Comment(s) on this Question

Welcome to the NCERT Solutions for Class 11 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 1 , Question 5: Describe the role of liver, lungs and skin in excretion.....