Firstly, electrical impulses only reach cells connected by nervous tissue. Secondly, cells need time to reset their mechanisms after generating and transmitting an impulse, hindering continuous transmission.

Electrical impulses are rapid and efficient means of communication in multicellular organisms due to their quick transmission, allowing for fast responses to stimuli.

Fast responses to stimuli require quick information transfer. The medium of transmission must move rapidly to facilitate swift communication within the organism.

Growth in animal bodies occurs in controlled directions, unlike haphazard growth. For example, our arms and fingers grow in specific patterns.

Controlled movements in multicellular organisms require precise information transfer. This ensures coordinated growth and responses to stimuli.