Available Answers

1. 1.

   How are roots useful to the plants? Give any two points.

2. 2.

   What do xylem vessels carry?

3. 3.

   Name the plant tissue which helps in carrying the food to different parts of a plant.

4. 4.

   Define semi-permeable membrane.

5. 5.

   Define osmosis.

6. 6.

   Under what conditions do a plant transpire (a) more quickly and (b) more slowly?