Q3 of 67 Page 48

Complete the following statements:

Active transport is one in which the ions outside the roots move in with expenditure of energy ...........

Active transport is a phenomenon in which the passage of substances, such as salts and ions, takes place from its lower concentration to its higher concentration using the energy from the cell itself. This is the total opposite to the phenomenon of diffusion where the passage of substances takes place from its higher concentration to its lower concentration without the use of energy.


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2

Give the equivalent terms for the following:

Loss of water through a cut stem.

 3

Complete the following statements:

Hypotonic solution is one in which the solution kept outside the cell has lower solute concentration than .............. the cell.

 3

Complete the following statements:

The bending movements of certain flowers towards the sun and the sleep movements of certain plants at night are examples of ..............

 4

Fill in the blanks by choosing the correct alternative from those given in brackets.

When placed in a more concentrated solution, the cell contents will ......... (Shrink / swell up)