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What is triploblastic? What is bilaterally symmetrical ?

Hi Alistair

Please find below the solution to the asked query:

The animals whose blastula (embryo) posses three germ layers are known as triplobastic.  The layers are ectoderm, endoderm and mesoderm. Exmaple, Platyhelminthes and all chordates are triploblastic animals.

Bilateral symmetry is a type of symmetry in which the body of an organism can be divided into two equal parts by only one plane. The two parts are approximately identical and mirror images of each other. The animals that posses this type of symmetry are called bilaterally symmetrical. Example : Platyhelminthes & chordates

To practice with some more questions following are the links of the similar queries as asked by you:

https://www.meritnation.com/ask-answer/question/can-u-give-some-more-information-of-platylminthes-being-trip/diversity-in-living-organisms/3547366

https://www.meritnation.com/ask-answer/question/what-is-radial-symmetry-and-bilateral-symmetry/diversity-in-living-organisms/3369027

Hope this information will clear your doubts about triploblastic and bilaterally symmetrical.

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Regards

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. Bilateral Symmetry: It is a type of 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, e.g., lizard, human.

b. Coelom: It is mesoderm lined, fluid filled internal body cavity that provides a shock proof environment to the contained body organs, e.g, chordates, annelids.

c. Triploblasitc. They are animals having three germinal layers—outer ectoderm, middle mesoderm and inner endoderm, e.g., nematodes, arthropods, star fish.
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