Q3 of 67 Page 58

From your knowledge of physiology can you think of some method of increasing the life of cut plants in a vase?

Some methods that can increase the life of cut plants in a vase are:

a) Using plant growth hormone called cytokinins that help delay senescence or aging of plant parts.


b)Placing the cut stem immersed in water in the vase to not allow water cavitation to occur by air.


c) Essential oils can increase vase life of cut plants.


More from this chapter

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1

Minerals absorbed by the roots travel up the xylem. How do they reach the parts where they are needed most? Do all the parts of the plant get the same amount of the minerals?

 2

If one wants to find minerals and in the form they are mobilised in the plant, how will an analysis of the exudate help?

 4

Do different species of plants growing in the same area show the same rate of transpiration at a particular time? Justify your answer.

 5

Water is indispensable for life. What properties of water make it useful for all biological processes on the earth?

a) Water is a polar solvent due to which it is regarded as the ‘universal solvent’ .


b) Water has high specific heat capacity.


c) Water has low viscosity and high surface tension.


d) The density of water decreases below 4◦C.


e) Capillarity of water