Why Robertson model was rejected

Unfortunately, though Robertson's electron micrographs of cell membranes were exceptional for their day, they failed to illustrate that many proteins penetrate the membrane bilayer, and since his images were necessarily static views, they gave no indication of the remarkable ability of proteins to diffuse later- ally ...

Unfortunately, though Robertson's electron micrographs of cell membranes were exceptional for their day, they failed to illustrate that many proteins penetrate the membrane bilayer, and since his images were necessarily static views, they gave no indication of the remarkable ability of proteins to diffuse later- ally ...

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the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.