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6th ICSE
IMPORTANT
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Give reasons for the following.

Valves are present in veins but not in arteries.

Important Questions on Human Circulatory System

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6th ICSE
IMPORTANT
ICSE Biology>Chapter 6 - Human Circulatory System>TEST Yourself>Q 1
Blood cells which transport oxygen are:
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6th ICSE
IMPORTANT
ICSE Biology>Chapter 6 - Human Circulatory System>TEST Yourself>Q 2
The blood group which can receive blood from all the four blood groups is:
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6th ICSE
IMPORTANT
ICSE Biology>Chapter 6 - Human Circulatory System>TEST Yourself>Q 3
Human heart is:
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6th ICSE
IMPORTANT
ICSE Biology>Chapter 6 - Human Circulatory System>TEST Yourself>Q 4
Pulmonary vein carries:
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6th ICSE
IMPORTANT
ICSE Biology>Chapter 6 - Human Circulatory System>TEST Yourself>Q 5
Sphygmomanometer is used to measure
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6th ICSE
IMPORTANT
ICSE Biology>Chapter 6 - Human Circulatory System>TEST Yourself>Q 6
Pulse rate is 
EASY
6th ICSE
IMPORTANT
ICSE Biology>Chapter 6 - Human Circulatory System>TEST Yourself>Q 1
Draw labelled diagrams of three types of blood vessels showing difference between their lumen.
EASY
6th ICSE
IMPORTANT
ICSE Biology>Chapter 6 - Human Circulatory System>THINK ZONE>Q •

Why is blood in arteries a brighter red than the blood in veins?