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Sohan grew sugarcane from two types of cuttings, A and B. Type B sprouted into plants; type A did not. (i) Why could B grow but not A? (ii) What difference was present in B? (iii) What observation showed the effect? (iv) What parameters should be kept the same for a fair comparison?
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(i) Type B grew because its cutting included a node with an intercalary or apical meristem, which can divide and form new shoots; type A had no such growing region.
(ii) Type B contained a node (with buds and meristematic tissue), while type A was a piece of internode without one.
(iii) The observation was that type B sprouted and grew into sugarcane plants while type A did not.
(iv) Soil, water, light, temperature and the size of the cuttings should be kept the same, so only the presence of a node differs.
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