Share
Notifications

View all notifications
Advertisement

Selina solutions for Concise Biology Class 7 ICSE chapter 5 - Excretion in Humans [Latest edition]

Login
Create free account


      Forgot password?

Chapters

Concise Biology Class 7 ICSE - Shaalaa.com

Chapter 5: Excretion in Humans

Review questionsShort answer questionsLong answer questionsAdditional questionsExercises

Review questions

Selina solutions for Concise Biology Class 7 ICSE Chapter 5 Excretion in Humans Review questions

Review questions | Q 1.1

Put a tick mark (✓) against the most appropriate alternative in the following statement :  

The kidneys are made up of tiny tubular units called :

  • glomerulus

  • nephrons

  • capillaries

  • neurons 

Review questions | Q 1.2

Put a tick mark (✓) against the most appropriate alternative in the following statement : 

 In human beings, urea is produced in :

  • liver

  • kidney

  • spleen

  • urinary bladder

Review questions | Q 1.3

Put a tick mark (✓) against the most appropriate alternative in the following statement : 

 Besides water, the urine mainly contains :

  • urea

  • nitric acid

  • glucose

  • bile pigments

Review questions | Q 1.4

Put a tick mark (✓) against the most appropriate alternative in the following statement : 

Filtration of excretory wastes from the blood occurs in:

  • collecting tubule

  • ureter

  • urinary bladder

  • nephrons 

Advertisement

Short answer questions

Selina solutions for Concise Biology Class 7 ICSE Chapter 5 Excretion in Humans Short answer questions

Short answer questions | Q 1.1

Fill in the blank :

Nitrogenous wastes in the urine are in the form of urea and ..................... 

Short answer questions | Q 1.2

Fill in the blank : 

The unit of human kidney is called ..................... 

Short answer questions | Q 1.3

Fill in the blank : 

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

Short answer questions | Q 2.1

Define the following: 

Excretion 

Short answer questions | Q 2.2

Define the following: 

Excretory organs  

Short answer questions | Q 2.3

Define the following: 

Dialysis

Short answer questions | Q 2.4

Define the following:  

Nephron

Short answer questions | Q 3.1

Write True (T) or False (F) for the following statement. Rewrite the false statement in the correct form. 

Removal of solid undigested food is excretion 

  • True

  • False

Short answer questions | Q 3.2

Write True (T) or False (F) for the following statement. Rewrite the false statement in the correct form. 

Medulla of kidney passes urine into urinary bladder.  

  • True

  • False

Short answer questions | Q 3.3

Write True (T) or False (F) for the following statement. Rewrite the false statement in the correct form.   

Excess sugar in the blood is a symptom of diabetes. 

  • True

  • False

Short answer questions | Q 3.4

Write True (T) or False (F) for the following statement. Rewrite the false statement in the correct form. 

Urine is devoid of blood cells. 

  • True

  • False

Short answer questions | Q 4

Name the blood vessel that brings blood to the kidneys. 

Short answer questions | Q 5

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

Advertisement

Long answer questions

Selina solutions for Concise Biology Class 7 ICSE Chapter 5 Excretion in Humans Long answer questions

Long answer questions | Q 1

Define excretion. Write the four organs of the human urinary system in their correct sequence. 

Long answer questions | Q 2

Why is excretion necessary in living beings?

Long answer questions | Q 3

What is meant by osmoregulation?

Long answer questions | Q 4

Describe the structure of the kidney with the help of a labelled diagram. 

Long answer questions | Q 5

What are the two ways by which a person can get relief in case of kidney failure?

Long answer questions | Q 6

Draw a diagram of the human excretory system and label the following parts: Kidney, ureter, urinary bladder, and urethra. 

Long answer questions | Q 7

How are kidney stones formed? 

Long answer questions | Q 8

What are the symptoms of a urinary tract infection? 

Advertisement

Additional questions

Selina solutions for Concise Biology Class 7 ICSE Chapter 5 Excretion in Humans Additional questions

Additional questions | Q 1.1

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.  

  • True

  • False

Additional questions | Q 1.2

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

Each kidney contains millions of microscopic filtering units called ureters. 

  • True

  • False

Additional questions | Q 1.3

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

The Bowman’s capsule and glomerulus together form the Malpighian body. 

  • True

  • False

Additional questions | Q 1.4

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

Liver produces bile pigments from the hemoglobin of broken RBCs.

  • True

  • False

Advertisement

Exercises

Selina solutions for Concise Biology Class 7 ICSE Chapter 5 Excretion in Humans Exercises

Exercises | Q 1

Tick the most appropriate answer. 

The process of removing waste from the body is called

  • respiration

  • excretion

  • inspiration

  • expiration 

Exercises | Q 2

Tick the most appropriate answer. 

The opening of the urinary bladder is called

  • nephron

  • uriniferous tubule

  • urethra

  • nephridia  

Exercises | Q 3

Tick the most appropriate answer. 

A network of capillaries present in the Bowman’s capsule is called 

  • Malphigian body

  • glomerulus

  • Uriniferous tubule

  • ureter 

Exercises | Q 4

Tick the most appropriate answer. 

The blood vessel that supplies impure blood to a kidney is the

  • renal artery

  • renal vein

  • portal artery

  • portal vein  

Exercises | Q 5

Tick the most appropriate answer. 

The Bowman’s capsule and glomerulus together form the

  • urinary body

  • Malpighian tubule

  • Malpighian body

  • urinary tubule 

Exercises | Q 6

Tick the most appropriate answer. 

Quinine is used in the treatment of

  • filaria

  • dengue 

  • malaria

  • paralysis

Exercises | Q 7

Tick the most appropriate answer. 

Plants maintain the concentration of sap inside their body with 

  • respiration

  • transpiration

  • osmosis

  • absorption 

Exercises | Q 8

Tick the most appropriate answer.  

Transpiration is affected by

  • light and temperature

  • humidity and wind

  • wind and temperature

  • all of these

Advertisement

Exercises

Selina solutions for Concise Biology Class 7 ICSE Chapter 5 Excretion in Humans Exercises

Exercises | Q 1

Fill in the blank. 

.................. are a pair of reddish-brown, bean-shaped structures that lie on either side of the backbone.

Exercises | Q 2

Fill in the blank. 

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

Exercises | Q 3

Fill in the blank. 

.................. carries urine from the kidney to the urinary bladder.

Exercises | Q 4

Fill in the blank.  

Malpighian body consists of Bowman’s capsule and ..................... 

Exercises | Q 5

Fill in the blank. 

.................. produces bile pigments from the heamoglobin of broken RBCs.

Exercises | Q 6

Fill in the blank. 

....................... are present in the stem of pine tree that make the pinewood strong and durable.

Exercises | Q 7

Fill in the blank. 

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

Exercises | Q 8

Fill in the blank.  

When air is humid, the rate of transpiration is .................. 

Advertisement

Exercises

Selina solutions for Concise Biology Class 7 ICSE Chapter 5 Excretion in Humans Exercises

Exercises | Q 1

Differentiate between
ureter and urethra.

Exercises | Q 2

Differentiate between 

bowman’s capsule and glomerulus.

Exercises | Q 3

Differentiate between 

tannins and resins

Exercises | Q 4

Differentiate between 

excretion and transpiration

Advertisement

Exercises

Selina solutions for Concise Biology Class 7 ICSE Chapter 5 Excretion in Humans Exercises

Exercises | Q 1

Find the odd one out. Give a reason for your choice.

ureter, kidney, urinary bladder, lung, urethra 

Exercises | Q 2

Find the odd one out. Give a reason for your choice.

skin, heart, lung, liver, kidney  

Exercises | Q 3

Find the odd one out. Give a reason for your choice.

tannin, urine, latex, resin 

Advertisement

Exercises

Selina solutions for Concise Biology Class 7 ICSE Chapter 5 Excretion in Humans Exercises

Exercises | Q 1

Answer the following in short.

What is excretion? 

Exercises | Q 2

Answer the following in short.

What are the main organs involved in the human excretory system? 

Exercises | Q 3

Answer the following in short.

What is urethra? 

Exercises | Q 4

Answer the following in short.

List five waste products of plants. 

Exercises | Q 5

Answer the following in short.

Define transpiration in plants. 

Advertisement

Exercises

Selina solutions for Concise Biology Class 7 ICSE Chapter 5 Excretion in Humans Exercises

Exercises | Q 1

Answer the following in detail.

Draw a labelled diagram of the urinary system in human beings and describe each part. 

Exercises | Q 2

Answer the following in detail.

Explain the structure of a nephron with the help of a diagram.

Exercises | Q 3

Answer the following in detail.

Describe the process of urine formation. 

Exercises | Q 4

Answer the following in detail.

How do skin and lungs help in excretion?

Exercises | Q 5

Answer the following in detail.

Explain the process of transpiration. Describe some factors that affect it. 

Exercises | Q 6

Answer the following in detail.

Write a short note on artificial kidneys.

Advertisement

Exercises

Selina solutions for Concise Biology Class 7 ICSE Chapter 5 Excretion in Humans Exercises

Exercises | Q 1

Correct the sequence of the following steps to explain the process of urine formation.   

1. Blood enters the glomerulus under high pressure.
2. The filtrate passes through the thin walls of the Bowman’s capsule into the renal tubule
3. As the filtrate, passes through the tubule, water, and many useful substances are reabsorbed by the walls of the blood capillaries.
4. Water and small solutes are filtered in the Bowman’s capsule.
5. The remaining liquid, along with waste is called urine and is collected in the urinary bladder.
6. Blood containing waste material enters the kidneys through the renal artery.

Advertisement

Exercises

Selina solutions for Concise Biology Class 7 ICSE Chapter 5 Excretion in Humans Exercises

Exercises | Q 1

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? 

  • brain

  • heart

  • kidneys

Exercises | Q 2

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 

  • nephrologist

  • cardiologist

  • neurologist

Exercises | Q 3

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. 

Harry most probably needs a

  • placemaker

  • dialysis

  • skin graft

Advertisement

Chapter 5: Excretion in Humans

Review questionsShort answer questionsLong answer questionsAdditional questionsExercises
Concise Biology Class 7 ICSE - Shaalaa.com

Selina solutions for Concise Biology Class 7 ICSE chapter 5 - Excretion in Humans

Selina solutions for Concise Biology Class 7 ICSE chapter 5 (Excretion in Humans) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Concise Biology Class 7 ICSE solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. Selina textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Concise Biology Class 7 ICSE chapter 5 Excretion in Humans are Concept of Excretion, Organs and Excretory Products - Kidneys, Sweat Glands, Lungs, Renal Excretory System - Kidneys, Ureter, Urinary Bladder, Urethra, Role of Kidneys in Filtration of Blood Through Nephrons, Common Disorders of the Urinary System - Urinary Tract Infection, Common Disorders of the Urinary System: the Kidney Stone.

Using Selina Class 7 solutions Excretion in Humans exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Selina Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 7 prefer Selina Textbook Solutions to score more in exam.

Get the free view of chapter 5 Excretion in Humans Class 7 extra questions for Concise Biology Class 7 ICSE and can use Shaalaa.com to keep it handy for your exam preparation

Advertisement
View in app×