Question

13. Define the terms and give one example of each
(a) Bilateral Symmetry
(b) Coelom
(e) Triploblastic​

Answer 1

• Bilateral symmetry refers to organisms with body shapes that are mirror images along a midline called the sagittal plane. The internal organs, however, are not necessarily distributed symmetrically.
• the principal body cavity in most animals, located between the intestinal canal and the body wall.
• having a body derived from three embryonic cell layers (ectoderm, mesoderm, and endoderm), as in all multicellular animals except sponges and coelenterates.

Answer 2

Answer:

Explanation:

)BILATERAL SYMMETRY:-only one imaginary axis passing through the body dividies it into two equal halves.

2)BODY CAVITY:-cavity between the body and internal organs is called as body cavity /coelom.

3)TRIPLOBLASTIC:- three germinal layers ,ectoderm ,mesoderm and endoderm present.