A destarched plant is one whose

• Leaves are free from chlorophyll

• Aerial parts are free from starch

• Leaves are free from starch

• Plant is free from starch

An apparatus as shown below was set up to investigate a physiological process in plants. The setup was kept in sunlight for two hours. Droplets of water were then seen inside the bell jar. Answer the questions that follow:


i. Name the process being studied.
ii. Explain the process named above in ii.
iii. Why was the pot covered with a plastic sheet?
iv. Suggest a suitable control for this experiment.
v. Mention two ways in which this process is beneficial to plants.
vi. List three adaptations in plants to reduce the above mentioned process.

Study the diagram given below and answer the following questions:

(i) Name the process being studied in the above experiment.

(ii) Explain the process mentioned in (i) above.

(iii) Why is oil placed over water?

(iv)What do we observe with regard to the level of water when this setup is placed in

(1) bright sunlight, (2) humid conditions and (3) on a windy day?

(v) Mention any three adaptations in plants to overcome the process mentioned in (ii)

Mention the effects of two individuals in a street fight on the following organs by the autonomous nervous system (one has been done for you).

(ii) List four major activities of the Red Cross.

Name the following:

(ii) A plant with sunken stomata.

There are five sets consisting offive terms given below. In each set, there is a word
which is an odd one. For each of these sets, write down the category of the group
having identified the odd one out, as shown in the example:

Example: (0) cell wall, vacuole, centrosome, plastids, mitochondria

(i) Blinking, Knitting without looking, Smiling, Blushing, Crying

Choose the correct answer to the following statements out of the three choices given
after each statement.

Loss of water as droplets from hydathodes is called

Account for the following:

(iii)The leaves of certain plants roll up on a bright sunny day.