EASY
7th CBSE
IMPORTANT
Earn 100

What does the circulatory system consist of? Give the main function of each.

Important Questions on Transportation of Materials in Plants and Animals

MEDIUM
7th CBSE
IMPORTANT
Differentiate between arteries and veins. What is the importance of capillaries in the circulatory system?
HARD
7th CBSE
IMPORTANT
If you observe a drop of blood under a microscope, which cells would you see? What are the functions of these cells?
HARD
7th CBSE
IMPORTANT
With the help of a labelled diagram, trace and explain the path of blood circulation in the human body.
HARD
7th CBSE
IMPORTANT
Draw a labelled diagram of the urinary system showing and explaining its various organs.
HARD
7th CBSE
IMPORTANT
What processes take place during the period when the blood enters the kidneys till the urine leaves the body?
HARD
7th CBSE
IMPORTANT
Why is the colour of blood red, though it has constituents of different colours?
EASY
7th CBSE
IMPORTANT
Which side of the heart has oxygen-rich blood and which side has carbon dioxide-rich blood?
MEDIUM
7th CBSE
IMPORTANT

If vegetables such as brinjals or ladyfingers become somewhat dry and shrivelled, they are put in water. They start looking fresh again, because water enters inside them. In the absence of any opening, how does water enter the vegetables?