CLASS - 10 SCIENCE IMPORTANT QUESTIONS OF MARK 1 FOR BOARD EXAMINATION   

QUESTION NO. 101

What are outside raw materials used for an organism?

ANSWER NO. 101

1. WATER : which is used for digestion of food and also useful for certain body function.
2. OXYGEN : oxygen is useful for breakdown of food which provide energy and it is very essential for in organism to live.
3. FOOD : it is obligatory source of energy for a body.

QUESTION NO.102 

What is role of the acid in our stomach?

ANSWER NO. 102

Stomach acid activates the enzyme pepsin needed for protein digestion. Stomach acid signals to the pancreas to produce digestive juices and enzymes to further breakdown of food.

QUESTION NO. 103

What is the function of digestive enzymes?

ANSWER NO. 103

Digestion is set of biochemical reaction. Digestive enzymes are bio catalyst which can increase the rate of biochemical reaction.

QUESTION NO.  104

Write the names of enzyme secreted by

•  Mouth
• Pancreas

ANSWER NO. 104

• Mouth - Amylase
• Pancreas - Amylase, trypsin, lipase.

QUESTION NO. 105

What is stomata?

ANSWER NO. 105

Stomata on small pores present in leaf. They are surrounded by guard cells which help in closing and opening of stomata.

QUESTION NO. 106

What is the function of alveoli?

ANSWER NO. 106

 Through alveoli oxygen is taken into the body and carbon dioxide is eliminated, in this the alveoli gaseous exchange takes place.

QUESTION NO. 107

What is alveoli?

ANSWER NO. 107

It is the pouch like air sac at the end of smallest bronchioles are called alveoli.

QUESTION NO. 108

Write the function of artery and veins.

ANSWER NO. 108

Arteries carry blood from the heart to the rest of the body, whereas veins carry blood from rest of the body back to heart. Almost all arteries carry oxygenated blood and almost all carry deoxygenated blood.

QUESTION NO. 109

What is the function of platelets in blood ?

ANSWER NO.  109

Platelets or blood cell responsible for blood clotting. If a blood vessel wall becomes damage, platelets will rush to the site of injury and form a plug or clot to stop the bleeding.

QUESTION NO. 110

What is lymph, write its function in the body.

ANSWER NO. 110

Lymph is the fluid that circulates throughout the lymphatic system. The primary function of lymphatic system is to transport lymph, a fluid containing infection fighting white blood cells, throughout the body.

ALSO SEE IMPORTANT QUESTION OF 1 MARK

From question no. 31 to 40


From question no. 1 to 10

From question no. 21 to 30

From question no. 41 to 50

From question no. 51 to 60

From question no. 61 to 70

From question no. 71 to 80

From question no. 81 to 90

From question no. 101 to 110

From question no. 111 to 120

From question no. 121 to 130