How do frogs breathe on land and in water?
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0
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3570
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March 24, 2018
|
What happens to the air we breathe in, once it reaches the lungs?
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0
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3077
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March 24, 2018
|
Write the difference in the composition of inhaled and exhaled air
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0
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1700
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March 24, 2018
|
Explain the role of the diaphragm in the process of breathing
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0
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1504
|
March 24, 2018
|
Insects and leaves of a plant have pores through which they exchange gases with the atmosphere
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0
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3705
|
March 24, 2018
|
Whenever we feel drowsy or sleepy we start yawning
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0
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4431
|
March 24, 2018
|
On a very cold morning, Boojho and Paheli were talking with each other as they walked down to their school
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0
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7102
|
March 24, 2018
|
On an average, an adult human being at rest breathes 15-18 times per minute
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0
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2676
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March 24, 2018
|
Which gas present in air is essential for aerobic respiration?
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0
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839
|
March 24, 2018
|
Describe the function of the heart
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0
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25256
|
March 24, 2018
|
Distinguish between the following. (a) Excretion and Transpiration
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0
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1758
|
March 24, 2018
|
Distinguish between the following.Arteries and Veins
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0
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2237
|
March 24, 2018
|
Draw a diagram of the human excretory system and label the various parts
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0
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1798
|
March 24, 2018
|
Give an experiment to show the upward movement of water in plants
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0
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3327
|
March 24, 2018
|
While learning to ride a bicycle Boojho lost his balance and fell
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0
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6872
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March 24, 2018
|
Read the following terms given below
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0
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1016
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March 24, 2018
|
How are oxygen and food circulated in Hydra?
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0
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943
|
March 24, 2018
|
What is the function of the circulatory system in humans?
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0
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537
|
March 24, 2018
|
Give reasons for the following statements
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0
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2305
|
March 24, 2018
|
List the functions of the blood. Ans. The following are the functions of the blood:
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0
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510
|
March 24, 2018
|
Why is blood needed by all the parts of a body?
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0
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1714
|
March 24, 2018
|
What are the components of blood?
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0
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12452
|
March 24, 2018
|
Does transpiration serve any useful function in the plants? Explain
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0
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1265
|
March 24, 2018
|
What are stomata? Give two functions of stomata
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0
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11465
|
March 24, 2018
|
What will happen if there are no platelets in the blood?
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0
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4282
|
March 24, 2018
|
Why is transport of materials necessary in a plant or in an animal? Explain
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0
|
1350
|
March 24, 2018
|
Paheli noticed water being pulled up by a motor-pump to an overhead tank of a five-storeyed building
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0
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2910
|
March 24, 2018
|
Observe figure given below and answer the given questions:
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0
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1115
|
March 24, 2018
|
Name the process and the organ which helps in removing the following wastes from the body
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0
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4039
|
March 24, 2018
|
Boojho’s uncle was hospitalised and put on dialysis after a severe infection in both of his kidneys
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0
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1772
|
March 24, 2018
|