question_answer

Which option is true about heart wood/duramen?

(i) It does not help in water and mineral conduction.

(ii) It is dark coloured 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)