The transpiration from the two leaf surfaces are compared by dry paper strips previously soaked in solution of

Sodium chloride

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Cobalt nitrate

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Cobalt chloride

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Calcium chloride

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C Cobalt chloride
The transpiration can be demonstrated by cobalt chloride paper test. Dry cobalt chloride is blue, while the moist one is pink. A filter paper slip can be dipped in 3 to 5% cobalt chloride solution and dried. It appears blue over leaf surface and should be protected from atmospheric humidity by a glass slide or transparent tape, change in colour of the filter paper slip from blue to pink indicates transpiration.

Suggest Corrections

Similar questions

Q. In a dorsiventral leaf, the cobalt chloride paper placed on the lower side of the leaf turns pink rapidly as compared to that on the upper surface because from the lower side

Given above is the diagram of an experimental setup to study the process of transpiration in plants. Study the same and then answer the questions that follow:

(a) Name the color of dry cobalt chloride paper?

(b) Is the experimental leaf a monocot or a dicot? Give a reason to support your answer.

(d) After about half an hour what change, if any, would you expect to find in the cobalt chloride paper placed on the dorsal and ventral sides of the leaf? Give a reason to support your answer.

Q. Here is the diagram of an experimental set up to study the process of transpiration in plants.
Why are glass slides placed over the dry cobalt chloride papers?

_______________ can be proved by an experiment in which pieces of dry cobalt paper attached to the two surface of the leaf.

What is the characteristic feature of the cobalt chloride paper used in the transpiration experiment?

Join BYJU'S Learning Program