The wax-like layer on the epidermis of leaves which reduces transpiration.

Choose between the two options to answer the question specified in the brackets for the following.

An example is illustrated below.

Example: Corolla or Calyx (Which is the miter whorl?) Answer: Calyx

Lenticels or stomata (Which one remains open always?) 

Choose the correct answer from each of the four options given below:

Which one of the following does not affect the rate of transpiration?

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

(i) Name the process being studied. Define the process.

(ii) Why was the pot enclosed in a rubber sheet?

(iii) Mention two external factors which can accelerate the above process.

(iv) List two adaptations in plants to reduce the above process.

(v) Draw a neat, labelled diagram of a stomatal apparatus.

Differentiate between the following pairs on the basis of what is mentioned in the brackets:

Transpiration and Guttation (place of occurrence)