Page 2 - Assignment-Questions-Transport in Plants

8. Nearly 90% of the flowering plants have __________
a. Spores
b. Mycorrhizae
c. Naked seeds
d. None of the above
9. The movement of materials from the leaves to other tissues of the plant is called
_________
a. Tropic movement
b. Guttation
c. Transpiration
d. Translocation
10. The exudation of xylem sap drops on the edges of leaves is called
a. Transpiration
b. Guttation
c. Condensation
d. None of the above

B. Very Short Answer Questions (1 mark each)

1. Which part of the root is related with the absorption of water?
2. What makes the raisins to swell up when kept in water?
3. Define water potential.
4. What will happen to water potential when a solute is added to water?
5. A plant cell when kept in a solution got plasmolysed. What was the nature of the
solution ?
6. Mention two ways of absorption of water in plants.
7. Which form of sugar is transported through phloem?
8. Give one example of imbibition.
9. A flowering plant is planted in an earthen pot and irrigated. Urea is added to make the
plant grow faster, but after some time the plant dies. Give its possible reason.
10. Why is energy required to develop root pressure?

C. Short Answer Questions-II (2 marks each)

11. A well watered potted herbaceous plant shows wilting in the afternoon of a dry
sunny day. Give reason.
12. Do different species of plants growing in the same soil show the same rate of
transpiration of a particular time? Justify your answer.
13. What is casparian strip? Write its significance in plants.
14. Xylem transport is unidirectional and phloem transport bi-directional. Why?
15. How is transpiration different from guttation? Give two points.