ICSE Class 7CISCE
Share
Notifications

View all notifications

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

Selina Concise Biology - Middle School for Class 7 (2018-19 Session)

Login
Create free account


      Forgot password?

Chapters

Selina Selina Concise Biology - Middle School Class 7 (2018-19 Session)

Selina Concise Biology - Middle School for Class 7 (2018-19 Session) - Shaalaa.com

Chapter 5: Excretion in Humans

Chapter 5: Excretion in Humans solutions [Page 0]

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

The kidneys are made up of tiny tubular units called :
(a) glomerulus
(b) nephrons
(c) capillaries
(d) neurons 

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

 In human beings, urea is produced in :
(a) liver
(b) kidney
(c) spleen
(d) urinary bladder 

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

 Besides water, the urine mainly contains :
(a) urea
(b) nitric acid
(c) glucose
(d) bile pigments 

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

Filtration of excretory wastes from the blood occurs in:
(a) collecting tubule
(b) ureter
(c) urinary bladder
(d) nephrons 

Chapter 5: Excretion in Humans solutions [Page 0]

 Fill in the blanks :

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

Fill in the blanks : 

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

Fill in the blanks : 

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

Chapter 5: Excretion in Humans solutions [Page 0]

Define the following: 

Excretion 

Define the following: 

 Excretory organs  

Define the following: 

Dialysis  

Define the following:  

Nephron  

Chapter 5: Excretion in Humans solutions [Page 0]

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

Removal of solid undigested food is excretion  

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

Medulla of kidney passes urine into urinary bladder.  

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

Excess sugar in blood is a symption ofdiabetes. 

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

Urine is devoid of blood cells.  

Chapter 5: Excretion in Humans solutions [Page 0]

Name the blood vessel that brings blood to the kidneys. 

Chapter 5: Excretion in Humans solutions [Page 0]

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

Chapter 5: Excretion in Humans solutions [Page 0]

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

Why is excretion necessary in living beings ? 

What is meant by osmoregulation ? 

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

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

 

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

How are kidney stones formed ? 

What are the symptoms of an urinary tract infection ? 

Chapter 5: Excretion in Humans solutions [Page 0]

State if the following statements are true or false. Correct the statemenet if it is false.  

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

State if the following statements are true or false. Correct the statemenet if it is false. 

Each kidney contains millions of microscopic filtering units called ureters. 

State if the following statements are true or false. Correct the statemenet if it is false. 

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

State if the following statements are true or false. Correct the statemenet if it is false.  

Liver produces bile pigments from the haemoglobin of broken RBCs.  

Chapter 5: Excretion in Humans solutions [Page 0]

Tick the most appropriate answer. 

The process of removing waste from the body is called
a. respiration
b. excretion
c. inspiration
d. expiration 

Tick the most appropriate answer. 

The opening of the urinary bladder is called
a. nephron
b. uriniferous tubule
c. urethra
d. nephridia  

Tick the most appropriate answer. 

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

a. Malphigian body
b. glomerulus
c. Uriniferous tubule
d. ureter 

Tick the most appropriate answer. 

 The blood vessel that supplies impure blood to a kidney is the
a. renal artery
b. renal vein
c. portal artery
d. portal vein  

Tick the most appropriate answer. 

The Bowman’s capsule and glomerulus together form the
a. urinary body
b. Malpighian tubule
c. Malpighian body
d. urinary tubule 

Tick the most appropriate answer. 

Quinine is used in the treatment of
a. filaria
b. dengue 
c. malaria
d. paralysis

Tick the most appropriate answer. 

 Plants maintain the concentration of sap inside their body with 

a. respiration
b. transiration
c. osmosis
d. absorption 

Tick the most appropriate answer.  

Transpiration is affected by
a. light and temperature
b. humidity and wind
c. wind and temperature
d. all of these . 

Chapter 5: Excretion in Humans solutions [Page 0]

Fill in the blanks. 

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

Fill in the blanks. 

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

Fill in the blanks. 

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

Fill in the blanks.  

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

Fill in the blanks. 

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

Fill in the blanks. 

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

Fill in the blanks. 

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

Fill in the blanks.  

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

Chapter 5: Excretion in Humans solutions [Page 0]

Differentiate between
 ureter and urethra.  

Differentiate between 

bowman’s capsule and glomerulus. 

Differentiate between 

tannins and resins 

Differentiate between 

excretion and transpiration

Chapter 5: Excretion in Humans solutions [Page 0]

ureter, kidney, urinary bladder, lung, urethra 

Find the odd one out. Give reasons for your choice. 

 skin, heart, lung, liver, kidney  

tannin, urine, latex, resin 

Chapter 5: Excretion in Humans solutions [Page 0]

What is excretion ? 

 

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

What is urethra ? 

List five waste products of plants. 

 

Define transpiration in plants. 

Chapter 5: Excretion in Humans solutions [Page 0]

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

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

 

Describe the process of urine formation. 

How do skin and lungs help in excretion ? 

 

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

Write a short note on artificial kidneys.

Chapter 5: Excretion in Humans solutions [Page 0]

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 it 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. 

Chapter 5: Excretion in Humans solutions [Page 0]

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)   

 

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)    

 

 

 

 

 

 

 

 

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)  

Chapter 5: Excretion in Humans

Selina Selina Concise Biology - Middle School Class 7 (2018-19 Session)

Selina Concise Biology - Middle School for Class 7 (2018-19 Session) - Shaalaa.com

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

Selina solutions for Class 7 Biology 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 Selina Concise Biology - Middle School for Class 7 (2018-19 Session) solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com are providing 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 Class 7 Biology 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 Biology and can use Shaalaa.com to keep it handy for your exam preparation

S
View in app×