True or false. animals vary tremendously in structure. nevertheless, they can be categorized into a few basic body plans based on body symmetry, number of embryonic germ layers, type (or absence) of body cavity, and characteristics of embryonic development.

True

Explanation:

Animals can be categorized into 3 based on body symmetry

Animals can be categorized into 2 based on number of embryonic germ layer;

Animals can be categorized based on presence/absence of body cavity or coelom;

Animals can be categorized into 2 based on characteristics of embryonic development;

plant because they survive by water, sunlight, ex.

explanation:

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .