Long Answer TypeThe diagram given below is an experiment conducted to study a factor necessary for photosynthesis. Observe the diagram and answer the questions which follow. 
(i) What is the aim of the experiment?
(ii) Name the test performed on the leaf and the solution used for the test.
(iii)What type of leaf was used for the experiment? Give an example.
(iv)What is the expected result of the above test on the parts labelled A and B?
(v) Give a balanced chemical equation to represent the process of photosynthesis.(i) The aim of the experiment is to demonstrate that chlorophyll is necessary for
photosynthesis.
(ii) The test performed on the leaf is the starch test. Iodine solution is used for the test.
(iii) A variegated leaf, i.e. a leaf which contains green and non-green parts, was used for the experiment, e.g. Coleus.
(iv)Part A does not turn blue black as it lacks chloroplasts and cannot synthesise starch.
Part B turns blue black as it possesses chloroplasts and so undergoes photosynthesis, thereby producing starch.
(v) Chemical equation for the process of photosynthesis:
(i) Draw a well-labelled diagram to show the metaphase stage of mitosis in an animal cell having four chromosomes.
(ii) State any two reasons for population explosion in India.
(iii)Give biological reasons for the following:
(1) Pituitary gland is also known as the master gland.
(2) Gametes have a haploid number of chromosomes.Draw a neat diagram of a neuron and label the following parts:
(1) Node of Ranvier
(2) Nissl’s granules
(3) Cyton
(ii) Name the part of the human brain which is associated with the following:
(1) Seat of memory
(2) Coordinates muscular activity
(iii)Mention any three major activities of WHO.
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