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Life Processes - Biology Class 10

1

(a) What will happen to guard cells and the stomatal pore when water flows into guard cells. (b) How do plants transmit information from cell to cell?

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2

(a) List two differences between ‘holozoic nutrition’ and ‘saprophytic nutrition. Give two examples each of these two types of nutrition. (b) State the roles of liver and pancreas. (c) Name the organ which performs the following functions in humans: Absorption of digested food Absorption of water. (d) Explain the statement, “Bile does not contain any enzyme but it is essential for digestion.”

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3

State the function of digestive enzymes.

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4

How do they take up carbon dioxide and perform photosynthesis?

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5

What is excretion? How do unicellular organisms remove their wastes?

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6

(a) List three events that occur during the process of photosynthesis. State in brief the role of stomata in this process. (b) Describe an experiment to show that sunlight is essential for photosynthesis.

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7

What is internal energy reserve in plants? Do the animals have the same energy reserve? Justify your answer.

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8

What is the role of saliva in the digestion of food?

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Life Processes

(a) What will happen to guard cells and the stomatal pore when water flows into guard cells. (b) How do plants transmit information from cell to cell?

State the function of digestive enzymes.

How do they take up carbon dioxide and perform photosynthesis?

What is excretion? How do unicellular organisms remove their wastes?

(a) List three events that occur during the process of photosynthesis. State in brief the role of stomata in this process. (b) Describe an experiment to show that sunlight is essential for photosynthesis.

What is internal energy reserve in plants? Do the animals have the same energy reserve? Justify your answer.

What is the role of saliva in the digestion of food?