Give one example each of a plant part:
(a) Which is positively hydrotropic as well as positively geotropic.
(b) Which is positively phototrophic but negatively geotropic.
The root of a plant is :
(i) positively phototropic but negatively geotropic
(ii) positively geotropic but negatively phototropic
(iii) negatively phototropic but positively hydrotropic
(iv) negatively hydrotropic but positively phototropic