Give one point of difference between the following on the basis of what is given in the brackets:

(v) Light reaction and dark reaction (site of occurrence)

State the exact location of the following:

Guard cells

Give the biological/technical terms for the following:

The biological process which is the starting point of the food chain

The figure given below represents an experiment to demonstrate a particular aspect
of photosynthesis. The alphabet 'A' represents a certain condition inside the flask


i. What is the aim of the experiment?

ii. Identify the special condition inside the flask.

iii Name an alternative chemical which can be used instead of KOH

iv In what manner do the leaves 1 and 2 differ at the end of the starch test? 

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

Photolysis and Photophosphorylation (definition)

Name the following :

The part of the chloroplast where the light reaction of photosynthesis takes place.

Match the items in Column I with that which is most appropriate in Column II. 

Give reasons for the following:

(v) Photosynthesis is considered as a process supporting all life on Earth.

State whether the following statements are true or false. lf false rewrite the correct
form of the statement by changing the first or last word only.

Explain the following terms:

(v) Destarched plant