Q. Primary root is (1) positively geotropic (2) positive hydrotropic (3) negative geotropic (4) negative hydrotropic

 1773  209 BHUBHU 2008 Report Error

Solution:

Primary roots develop directly through elongation of the radicle of embryo and persist throughout the life of the plant. These are generally non-green underground positively geotropic, positively hydrotropic and often negatively phototropic organ of the plant body.