|
How is clayey soil useful for crops?
|
|
0
|
10843
|
March 24, 2018
|
|
Locate the following zones given as boxed items in a diagram of soil profile
|
|
0
|
5853
|
March 24, 2018
|
|
Rajasthan is a desert state in India. Once while travelling to Rajasthan by train
|
|
0
|
2721
|
March 24, 2018
|
|
A man digging a pit found that he could dig with ease initially but digging became difficult as he went deeper
|
|
0
|
1701
|
March 24, 2018
|
|
Is it a good practice to remove grass and small plants that are growing in an open, unused field? Give reason to support your answer
|
|
0
|
2291
|
March 24, 2018
|
|
How can a farmer convert acidic soil to neutral soil?
|
|
0
|
4536
|
March 24, 2018
|
|
Which of the following situations ‘A’ or ‘B’ is advantageous for absorption of water and minerals? Why?
|
|
0
|
2421
|
March 24, 2018
|
|
Explain the mechanism of breathing in human beings
|
|
0
|
2766
|
March 24, 2018
|
|
How does gaseous exchange take place in earthworms , fish?
|
|
0
|
1914
|
March 24, 2018
|
|
Distinguish between the following. Breathing and Respiration
|
|
0
|
3798
|
March 24, 2018
|
|
List the similarities and differences between aerobic and anaerobic respiration
|
|
0
|
7495
|
March 24, 2018
|
|
Observe the figures given as (A) and (B) and answer the following
|
|
0
|
2339
|
March 24, 2018
|
|
A food stall owner was preparing dough for making bhaturas
|
|
0
|
14850
|
March 24, 2018
|
|
Observe the figure given below carefully and answer the following questions.Which process is being tested in the activity?
|
|
0
|
5635
|
March 24, 2018
|
|
Observe the figure given below carefully and answer the following questions
|
|
0
|
2557
|
March 24, 2018
|
|
Paheli participated in a 400 m race competition held at her school and won the race
|
|
0
|
9854
|
March 24, 2018
|
|
Explain respiration in plants
|
|
0
|
657
|
March 24, 2018
|
|
What facilitates opening and closing of stomatal pores?
|
|
0
|
845
|
March 24, 2018
|
|
Explain the process of breathing in fish
|
|
0
|
2352
|
March 24, 2018
|
|
How do frogs breathe on land and in water?
|
|
0
|
3639
|
March 24, 2018
|
|
What happens to the air we breathe in, once it reaches the lungs?
|
|
0
|
3157
|
March 24, 2018
|
|
Write the difference in the composition of inhaled and exhaled air
|
|
0
|
1748
|
March 24, 2018
|
|
Explain the role of the diaphragm in the process of breathing
|
|
0
|
1562
|
March 24, 2018
|
|
Insects and leaves of a plant have pores through which they exchange gases with the atmosphere
|
|
0
|
3765
|
March 24, 2018
|
|
Whenever we feel drowsy or sleepy we start yawning
|
|
0
|
4488
|
March 24, 2018
|
|
On a very cold morning, Boojho and Paheli were talking with each other as they walked down to their school
|
|
0
|
7239
|
March 24, 2018
|
|
On an average, an adult human being at rest breathes 15-18 times per minute
|
|
0
|
2728
|
March 24, 2018
|
|
Which gas present in air is essential for aerobic respiration?
|
|
0
|
879
|
March 24, 2018
|
|
Describe the function of the heart
|
|
0
|
25874
|
March 24, 2018
|
|
Distinguish between the following. (a) Excretion and Transpiration
|
|
0
|
1923
|
March 24, 2018
|