Define terms and one example of each (a) Bilateral Symmetry, (b) Coelom, (c) Triploblastic.

(a) Bilateral symmetry. It is a type of body symmetry in which appendages and organs of the body are paired with one of each pair being present in right and left halves of the body. It is an adaptation of motile life style, e.g., Frog/Lizards/Sparrow,/Human being.
(b) Coelom. It is a mesoderm lined, fluid-filled internal body cavity that provides a shock proof environment
to the contained body organs, e.g., annelids, chordates.
(c) Triploblastic. They are animals having three germinal layers – outer ectoderm, middle mesoderm and
inner endoderm, e.g., liver fluke/ Ascaris / Pheretima/house fly/star fish/Amphioxus cat.