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(a) A - Epicotyl ;
B - Cotyledon ;
C - Hypocotyl ;
(b) (i) Oxygen
- For oxidation of stored food substances releasing energy needed for cell division and growth ;
(ii) Water
- Activate enzymes ; hydrolyses and dissolves food substances ; softens testa for emergence of embryo ; medium of
enzymatic reactions ; Transports nutrients to the developing embryo;
(iii) Optimum temperature - Activates enzymes of hydrolysis for the breakdown of stored food substances into simple soluble
products ;
(c) (i) Apical dominance ;
(ii) Removal of apical bud removes source of auxins/reduces /lowers concentration of auxins.
Low concentration of auxins stimulates development of lateral buds into side branches;
sharon kalunda answered the question on May 29, 2019 at 10:54
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