Question

III. SHORT ANSWER: (3 marks)
1. Paheli uprooted a rose plant from the soil, most of the root hairs got left behind in the soil. She planted
it in a pot with new soil and watered it regularly. Will the plant grow or die?
2. It was a hot summer day when trisha planted a new sapling in the balcony. The sunlight was too hot to
bear. After few hours Trisha observed that the leaves of the plant have wilted down. Trisha started crying
that her plant will die. But her mother told her that she will make it normal after sometime.
a) What has happened with the plant?
b) How will Trisha's mother make the plant normal?
3. Paheli noticed that water being pulled up by a motor pump to the tank of five floor building. She
wondered how water moves up to great height in the tall trees. Can you tell, why?
4. Plants do not use all water they absorb from soil. Then why do they absorb so much water?
5. Plants need both oxygen and carbon dioxide, but both are included as waste'. Comment
6. What causes heart beat? Is there any similarity between heartbeat and pulse rate?
7.) What is the significance of partition between the chambers of heart?
1)How does sweat help keep you cool?
8. Why is blood needed by all the parts of the body?
9. i) What happens if blood do not contain platelets?
ii) Why haemoglobin is important for human body?
iii) Can a person survive if his/her one kidney alone is functioning properly. How?
10.1) Write any two causes that damage the human kidney.
ii) Does donating blood decrease the strength of a person?
11. Boojho's Uncle was hospitalised and put on dialysis after a severe infection in both of his kidneys.
a) What is dialysis?
b) When does it become necessary to take such a treatment?
12. While learning to ride a bicycle Boojho lost his balance and fel. He got bruises on his knees and it
started bleeding. However, the bleeding stopped after some time.​

Answer 1

Explanation:

1.it will die because already it's root were cut through which plant gets water.

2.