Reserpine is obtained from which part of the plant?

Which of the following trees provides the most durable wood?

Lathyrism is caused by

Select the correct match.
$(a)$ Cinchona officinalis $(i)$ Rhizome
$(b)$ Rauwolfia serpentina $(ii)$ Bark
$(c)$ Curcuma longa $(iii)$ Root

Castor oil is obtained from which of the following plants?

The respective haploid and monoploid number of chromosomes of hexaploid wheat are: