HARD
7th CBSE
IMPORTANT
Earn 100

Draw a labelled diagram of the urinary system showing and explaining its various organs.

Important Questions on Transportation of Materials in Plants and Animals

HARD
7th CBSE
IMPORTANT
Living Science 7>Chapter 12 - Transportation of Materials in Plants and Animals>EXERCISES>Q D
What processes take place during the period when the blood enters the kidneys till the urine leaves the body?
HARD
7th CBSE
IMPORTANT
Living Science 7>Chapter 12 - Transportation of Materials in Plants and Animals>EXERCISES>Q 1
Why is the colour of blood red, though it has constituents of different colours?
EASY
7th CBSE
IMPORTANT
Living Science 7>Chapter 12 - Transportation of Materials in Plants and Animals>EXERCISES>Q 2
Which side of the heart has oxygen-rich blood and which side has carbon dioxide-rich blood?
MEDIUM
7th CBSE
IMPORTANT
Living Science 7>Chapter 12 - Transportation of Materials in Plants and Animals>EXERCISES>Q 3

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?

MEDIUM
7th CBSE
IMPORTANT
Living Science 7>Chapter 12 - Transportation of Materials in Plants and Animals>EXERCISES>Q 4
Plants do not use all the water they absorb from the soil. Much of it is given off by transpiration. Why then do the plants absorb so much water?
HARD
7th CBSE
IMPORTANT
Living Science 7>Chapter 12 - Transportation of Materials in Plants and Animals>EXERCISES>Q 5

Xylem transports sap upwards only whereas phloem transports food in both directions. Why do you think there is a difference?

MEDIUM
7th CBSE
IMPORTANT
Living Science 7>Chapter 12 - Transportation of Materials in Plants and Animals>EXERCISES>Q 6
Is removal of undigested food from the body considered to be excretion? Why?
MEDIUM
7th CBSE
IMPORTANT
Living Science 7>Chapter 12 - Transportation of Materials in Plants and Animals>EXERCISES>Q 7
The ventricles have thick muscular walls whereas the auricles have thin walls. Why do you think thick muscular walls are necessary in the ventricles and not in the auricles?