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Selina solutions for Class 8 Biology chapter 6 - The Circulatory System

Selina Concise Biology for Class 8 (2018-19 Session)

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Selina Selina Concise Biology Class 8 (2018-19 Session)

Selina Concise Biology for Class 8 (2018-19 Session)

Chapter 6: The Circulatory System

Chapter 6: The Circulatory System solutions [Page 0]

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

The only artery which carries deoxygenated blood is called,

  1. Hepatic artery
  2. Pulmonary artery
  3. Aorta
  4. Renal artery

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

Pulmonary vein carries

  1. Oxygenated blood
  2. Deoxygenated blood
  3. Glucose-deficient blood
  4. CO2 laden blood

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

Function of WBCs is to

  1. Transport oxygen
  2. Help in clotting of blood
  3. Provide immunity
  4. Provide storage of food.

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

Blood Capillary is a

  1. Broad tube
  2. Artery with thick wall
  3. Vein with large lumen
  4. Narrow tube made up of endothelium only.

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

Nucleus is absent in 

  1. RBCs
  2. WBCs
  3. All blood cells
  4. Liver cells.

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

Sphygmomanometer measures

  1. Pulse rate
  2. Heart beat
  3. Blood pressure
  4. Brain activity

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

The blood tastes saltish due to the presence of dissolved:

  1. Sodium chloride
  2. Potassium chloride
  3. Ammonium nitrate
  4. Sodium nitrate

Chapter 6: The Circulatory System solutions [Page 0]

Differentiate between the following pair of terms:

Pulmonary artery and pulmonary vein.

 

Differentiate between the following pair of terms:

Vena cava and aorta.

Differentiate between the following pair of terms:

Platelets and WBC.

Differentiate between the following pair of terms:

RBC and WBC.

Give any three differences between an artery and a vein.

Fill in the blank with suitable word given below:

The two lower chambers of the heart are called ___________.

Fill in the blank with suitable word given below:

The _________ artery takes the blood from the ventricles to the lungs.

Fill in the blank with suitable word given below:

The blood loaded with carbon dioxide from the body comes into the __________ of the heart.

Fill in the blank with suitable word given below:

The oxygen-rich blood from the lungs comes into the __________ of the heart.

Fill in the blank with suitable word given below:

The oxygen-rich blood is pumped into different parts of the body through ________.

Fill in the blank with suitable word given below:

The carbon dioxide loaded blood from right ventricle is pumped into the lungs through _________ artery.

Fill in the blank with suitable word given below:
The instrument used to find out the blood pressure is known as __________________.

Fill in the blank with suitable word given below:

The colour of a red blood cell is due to _______________.

Fill in the blank with suitable word given below:

The blood plasma contains a dissolved substance called ______________.

Fill in the blank with suitable word given below:

The liquid part of coagulated blood is known as____________.

In which organ of our body does blood get oxygenated?

Which side of the heart (left or right) contains oxygenated blood?

What is the role of haemoglobin in the blood ?

Name the disease in which the number of platelets reduces to 25,000 – 30,000 per cubic mm of blood. State its major symptoms.

Chapter 6: The Circulatory System solutions [Page 0]

Given alongside is a diagram of human heart showing its internal structures. Label the parts marked 1 to 6, and answer the following questions.

(a) Which type of blood is carried by the blood vessel marked 2?
(b) Name the main artery which takes the blood from heart to different parts of the body?
(c) Which chamber of the heart receives deoxygenated blood from the body?

You can see some blood vessels on the outside of the hands specially in older people. Are those veins or arteries ? How can you confirm your answer ?

Give the functions of lymph.

Differentiate between Blood and the lymph.

Name any two heart conditions that occur commonly. Briefly explain each of them.

During surgical operations or during accidents, the patient may be given blood from outside to save his life. What is the technical name of this process ? Briefly explain the precautions to be observed and taken in this process.

State briefly, the difference between white blood cells and the red blood cells.

Answer very briefly, Red Blood cells have no nucleus, then why do we call them cells?

Answer very briefly, Why is it necessary to know The blood groups of the donor as well as the recipient ?

Answer very briefly, Why should the blood going away from the stomach and intestines pass through the liver and not directly to heart?

Name the three kinds of blood vessels found in human beings. With the help of suitable diagrams, differentiate between them.

Chapter 6: The Circulatory System solutions [Page 0]

Multiple choice question. Tick (✓) the correct choice:

Human heart has

  1. one auricle and one ventricle.
  2. two auricles and one ventricle.
  3. two auricles and two ventricles.
  4. one auricle and two ventricles.

Multiple choice question. Tick (✓) the correct choice:

The blood vessels in which blood goes away from the heart to different body parts are

  1. arteries
  2. capillaries
  3. veins
  4. both arteries and veins.

Multiple choice question. Tick (✓) the correct choice:

The heartbeat is measured by an instrument called

  1. thermometer
  2. sphygmomanometer
  3. stethoscope
  4. none of the above

Multiple choice question. Tick (✓) the correct choice:

The blood cells which protect the body from infection are

  1. RBCs
  2. platelets
  3. WBCs
  4. all the above

Multiple choice question. Tick (✓) the correct choice:

The four blood groups in humans are

  1. A, B, C and D
  2. A, B, AB and C
  3. A, B, AB and O
  4. A, B, AB and OO

Chapter 6: The Circulatory System solutions [Page 0]

Fill in the blank.

In human body, heart is located on the _____ side of the chest cavity.

Fill in the blank:

The blood vessels which carry blood from the heart to different parts of the body are called ________.

Fill in the blank.

___________ carry pure blood.

Fill in the blank.

The red-coloured pigment present in RBCs is called __________.

Fill in the blank.

The fluid part of blood is called _______.

Chapter 6: The Circulatory System solutions [Page 0]

Which of the following statement is true (T) and which ones are false (F)? Mark T or F:

Platelets help in clotting of blood.

Which of the following statement is true (T) and which ones are false (F)? Mark T or F:

The four blood groups in human beings are A, B, AB and AO.

Which of the following statement is true (T) and which ones are false (F)? Mark T or F:

People with blood group ‘O’ are called universal recipients.

Which of the following statement is true (T) and which ones are false (F)? Mark T or F:

Blood group A has antigen A.

Which of the following statement is true (T) and which ones are false (F)? Mark T or F:

Impure blood is received by the right auricle.

Chapter 6: The Circulatory System solutions [Page 0]

Match the statements in Column A with those in Column B:

Chapter 6: The Circulatory System solutions [Page 0]

Describe the function of Heart.

Describe the function of Blood vessels.

Describe the functions of Red blood cells.

Describe the functions of White blood cells.

Describe the functions of Platelets.

Describe the functions of Blood.

Chapter 6: The Circulatory System solutions [Page 0]

Define the term Circulatory system.

Define the term Arteries.

Define the term Veins.

Chapter 6: The Circulatory System solutions [Page 0]

Name the main parts of the circulatory system.

Name the organ from which oxygenated blood goes into the heart.

Describe, in brief, the circulatory system in human beings.

Draw the structure of a human heart and label its parts.

Why is a person having blood group AB called universal recipient and a person with blood group O called a universal donor?

Name the instruments used for measuring pulse.

Name the instruments used for measuring blood pressure.

Name the following:
Components of blood

Name the following:

Different blood groups

Differentiate between arteries and veins.

Write in brief about the following:

Blood groups

Write in brief about the following:

Blood transfusion.

Find the odd one out, giving reason:

 Arteries, capillaries, blood, veins

Find the odd one out, giving reason:

RBC, platelets, anti-A, WBC

What is the rate of heartbeat in normal adult human being?

Name the main artery which carries blood to different parts of the body.

What is the difference between pulmonary circulation and systemic circulation?

Blood in the human body circulates twice for making one complete round through the body. Explain.

How many litres of blood does an adult human body have?

Write a short note on human heart.

What are seen as greenish blue lines in our hands and legs?

Name the iron containing protein present in RBC of blood.

Define pulse.

Define heartbeat.

What is stethoscope? Explain.

What is a stroke? What causes it?

What is blood pressure? When does it rise?

What is antigens?

What is antibodies?

Chapter 6: The Circulatory System

Selina Selina Concise Biology Class 8 (2018-19 Session)

Selina Concise Biology for Class 8 (2018-19 Session)

Selina solutions for Class 8 Biology chapter 6 - The Circulatory System

Selina solutions for Class 8 Biology chapter 6 (The Circulatory System) 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 for Class 8 (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 8 Biology chapter 6 The Circulatory System are Circulatory System - Internal Structure of Heart in Detail (Including Valves, Septum; Pace Maker)., Circulatory System - Schematic Diagram of the Heart, Circulatory System - Blood Vessels - Aorta, Pulmonary Trunk, Coronary Artery and Vein, Vena Cava., Circulation of Blood as Double Circulation., Conditions Related to the Functioning of the Heart: Palpitations, Cardiac Arrest and Hyper Tension, Introduction of Lymphatic System as a Parallel Circulatory System, Human Body: Circulatory System Questions.

Using Selina Class 8 solutions The Circulatory System 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 8 prefer Selina Textbook Solutions to score more in exam.

Get the free view of chapter 6 The Circulatory System Class 8 extra questions for Biology and can use shaalaa.com to keep it handy for your exam preparation

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