_ no - TROPISTIC MOVEMENTS 



95. Negative phototaxis of algal swarm spores. 



(a) Seen under the microscope swimming away from the window side of a drop 



of water ; 

 (6) Seen with the naked eye to be settling down on the side of a glass jar away 



from the window. 



96. Positive geotropism of seedling roots which were placed horizontally in 

 darkness two days previously. The distance apart of ink marks which were equally 

 spaced before the curvature began shows that (a) the curvature occurs in the growing 

 region only and (6) the curvature is effected by the convex side growing more than 

 normally. 



