Which option is true about heart wood/ duramen?
(i) It does not help in water and mineral conduction.
(ii) It is dark **** but soft.
(iii) It has tracheary elements filled with tannins, resins, gums, oil, etc.
(iv) It is a peripheral part.
(v) Sensitive to microbes and insects, hence least durable.
(a) (i) and (iii)
(b) (ii) and (iii)
(c) (iv) and (v)
(d) (iii) and (iv)
