Question : The exine of a pollen grain is composed of one of the most resistant biological materials by which pollen grains are able to wihstand extremes of temperature and dessication and cannot be degraded by any enzyme, is

Question : The exine of a pollen grain is composed of one of the most

1.	Question : The exine of a pollen grain is composed of one of the most resistant biological materials by which pollen grains are able to wihstand extremes of temperature and dessication and cannot be degraded by any enzyme, is
Answer» lignocellulose sporopollenin CELLULOSE and LIGNIN PECTIN and cellulose ANSWER :B