The evolution of vascular tissue in plants made it easy for them to grow much taller. What types of selection pressures do you think early plants could have faced that favoured taller plants and the evolution of these tissues?

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.

what school and grade?

answer transpiration;