Biology(0610)-Need doubt clarification(Urgent)

[Shamu M]

15) Cobalt chloride paper is blue when dry but turns pink when wet. Some blue cobalt chloride paper
was fastened to the upper and lower surfaces of a leaf on a plant X and a leaf on plant Y.
The diagram shows the results of the experiment. (Please refer to question paper of May/June 2009-0610-01, Question 15).

Through which leaf surface was water lost most quickly?
A plant X, upper surface
B plant X, lower surface
C plant Y, upper surface
D plant Y, lower surface

The answer given is "B",can someone explain please, it's urgent, tomorrow I have my Biology paper.

 

[Besterlinks]

Because time taken is least for option B, rate of water release must be highest for option B Interpret the graph carefully.

 

[Warrior66]

AOA, okay I am just adding in to the explanation given by Besterlinks that see....if you look at the graph carefully, read the y-axis label: "it says time taken for
cobalt chloride
paper to turn
pink /minutes" so which means that which ever will have the least height means that water escaped the quickest right? So that will be the lower surface of leaf X. Don't panic. Just relax and READ the question carefully and just pray to Allah.

 

[meriama]

guys can someone explain me what's molluscicide??

 

[Shamu M]

Oh so it means as the plant X lower surface has more water so it will lose more water than the others,is that how to interpret the graph?

 

[Shamu M]

And thanks for the reply ,hope to get full in MCQ's

 

[princessanum]

guys can someone explain me what's molluscicide??

Molluscicide are pesticides against molluscus which are usually used in agricultural or gardening

 

[MARWA 1234]

hey are u there

 

[MARWA 1234]

now