Selina solutions for Concise Biology [English] Class 6 ICSE chapter 6 - The Circulatory System [Latest edition]

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

Function of WBCs is to

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Blood Capillary is a

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Nucleus is absent in

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 The only artery which carries deoxygenated blood is called,

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 Sphygmomanometer measures

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Pulmonary vein carries

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The blood tastes saltish due to the dissolved.

Differentiate between the following pair of terms: Platelets and WBCs

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: RBC and WBC

Give any three differences between an artery and a vein

Blood consists of two parts - a liquid part and a cellular part. Name these parts and briefly write about them

What is the role of haemoglobin in the blood?

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

Fill in the blanks with suitable words given below:

The two lower chambers of the heart are called ______.

The blood plasma contains a dissolved substance such as nutrients, ______, ______ and ______.

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

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The instrument used to find out the blood pressure is known as ______.

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

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

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

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

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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?

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

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

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

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?

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

1. Which types of blood is carried by the blood vessel marked 2?
2. Name the main artery which takes the blood from heart to different parts of the body?
3. Which chamber of the heart receives deoxygenated blood from the body?
4. Which chamber of the heart receives oxygenated blood from the lungs?

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

 Human heart has

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

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The heartbeat is measured by an instrument called

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The blood cells which protect the body from infection are

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The four blood groups in humans are

Fill in the blank:

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

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

Fill in the blank:

______ carry pure blood.

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

The fluid part of blood is called ______.

True or false:

Platelets help in clotting of blood.

True or false:

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

True or false:

People with blood group ‘O’ are called universal recipients

True or false:

Blood group A has antigen A.

True or false:

Impure blood is received by the right auricle.

Match the statements in Column A with those in Column B

 Describe the functions of the: Heart

 Describe the functions of the: Blood vessels

 Describe the functions of the: Red blood cells

 Describe the functions of the: White blood cells

 Describe the functions of the: Platelets

 Describe the functions of the: Blood

Define the Circulatory system. 

Define the: Arteries

Define the: Veins

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 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

Give any three differences between an artery and a vein

Write in brief about the following: Blood groups

Write in brief about the following: Blood transfusion

 Find the odd one out, giving reason.

 Find the odd one out, giving reason.

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 the 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 a stroke?

What is blood pressure?

When does blood pressure rise?

What are antigens?

What are antibodies?