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

QUESTION NO. 121

What is autotrophic nutrition?

ANSWER NO. 121

Autotrophic nutrition is a process in which the organism produces their own food from the simple inorganic materials such as water, carbon dioxide and mineral salt in the presence of Sunlight.

QUESTION NO. 122

What is heterotrophic nutrition?

ANSWER NO. 122

Heterotrophic nutrition is a type of Nutrition in which organism depends upon the other organism for food to survive. Heterotrophic organism have to take all the organic substance they need to survive.

QUESTION NO. 123

Why herbivorous needs longer small intestine compared to carnivorous ?

ANSWER NO. 123

Herbivorous eating grass needs a longer small intestine to allow the cellulose to be digested. Meat is easier to digest, hence carnivorous like tiger have a shorter small intestine.

QUESTION NO. 124

What is Villi and what is its function ?

ANSWER NO. 124

The inner lining of small intestine has numerous finger like projection called Villi. The Villi are richly supplied with blood vessels which takes the absorbed food to each and every cell of the body, where it is utilised for obtaining energy, building a new tissues and the repair of old tissues.

QUESTION NO. 125

What is the function of blood?

ANSWER NO. 125

Blood transports food, Oxygen and waste material in body.

QUESTION NO. 126

What is the function of xylem?

ANSWER NO. 126

Xylem moves water and Minerals obtained from the soil.

QUESTION NO. 127

Write the function of phloem.

ANSWER NO. 127

Phloem transport products of photosynthesis from the leaves where they are synthesized to other parts of the plant.

QUESTION NO. 128

What is transpiration?

ANSWER NO. 128

The loss of water in the form of vapour from the aerial part of the plant is known as transpiration.

QUESTION NO. 129

Write the expanded form of ATP and its function.

ANSWER NO. 129

The full form of ATP is Adenosine Triphosphate. ATP is a complex organic chemical that provides energy to drive many processes in living cells.

QUESTION NO. 130

What constitutes the central nervous system?

ANSWER NO. 130

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