
Hydathodes are also called as

Important Questions on Transport in Plants



Find correct statements from the following
Protein transporters are responsible for maximum rates of transport under saturated state
Translocation of substances in bulk flow requires hydrostatic pressure gradient
Root pressure plays the greatest contribution for upward movement of water in tall plants
Transport proteins of endodermal cells are control points for active transport of ions in two directions
The correct answer is





Study the diagram and the list given below.
i) Chloroplast
ii) Epidermal cell
iii) Guard cell
iv) Subsidiary cell
v) Stomatal pore
The correct match is

Given below is a diagram of the stomatal apparatus. Match the labels with the corresponding names of the compounds.
Choose the correct combination.




Given below are two statements:
Statement I: The forces generated by transpiration can create pressures sufficient to lift a xylem sized column of water over 130 metres high.
Statement II: Transpiration cools leaf surfaces, sometimes 10 to 15 degrees, by evaporative cooling.
In the light of the above statements, choose the most appropriate answer from the options given below:

Match List - I with List - II.
List-I | List-II | ||
(a) | Cohesion | (i) | More attraction in liquid phase |
(b) | Adhesion | (ii) | Mutual attraction among water molecules |
(c) | Surface tension | (iii) | Water loss in liquid phase |
(d) | Guttation | (iv) | Attraction towards polar surfaces |

The combination of numbered terms that correctly completes all the following statements is
i. Transport through the phloem is __1__ while transport through the xylem is __2__.
ii. Loading of sugars into the phloem is __3__ at the source.
iii. Movement of water out of the phloem at the sink is __4__.





