(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

Give suitable explanation for the following: 

A higher rate of transpiration is recorded on a windy day rather than on a calm day. 

Give suitable explanation for the following: 

Excessive transpiration results in the wilting of the leaves. 

Give suitable explanation for the following: 

Water transpired is the water absorbed. 

Give suitable explanation for the following: 

More transpiration occurs from the lower surface of a dorsiventral leaf. 

What is wilting? Some plants show wilting of their leaves at noon even when the soil is well watered, Why is it so? 

List any three major factors that accelerate the rate of transpiration. 

There is a general belief that forests tend to bring more frequent rains. Can you explain it scientifically? 

List the four advantages of transpiration to the plants. 

Mention any three methods by which the plants tend to reduce transpiration. 

In an experiment, four freshly plucked leaves (A-D) of a plant, such as those of china – rose, were treated as follows:
(a) Coated with Vaseline on its upper surface.
(b) coated on the lower surface.
(c) coated on both surface
(d) left uncoated.
All the four leaves A, B, C & D were left in a room for about 24 hours.
(i) which leaf would become most limp? Why?
(ii) which leaf would show least limping? Why?

 Choose the correct answer from the four options given below : 
Which one of the following does not affect the rate of transpiration ? 

Expand the following biological abbreviations :
(i) ABA 

Expand the following biological abbreviations : 
IAA

 Given below is an apparatus which has setup to investigate a physiological process in plants. The setup was placed in bright sunlight. Answer the questions that follow:

Name the process being studies. Define the process. 

Define the following:

Osmosis

Define the following:

Diffusion

Define the following:

Hypertonic solution

Define the term:

Plasmolysis