Question

what is diploblastic and triploblastic​

Answer 1

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Diploblastic

➡ Do not have cavities .

➡ Do not have a mesoderm

➡ Produce two primary germ layers , endoderm and ectoderm during gastrulation .

➡ Diploblastic animals are radially symmetric .

➡ Do not have organs .

Triploblastic

➡ Develop a body cavity called coelom .

➡ Develop a mesoderm .

➡ Produce three primary germ layers , endoderm , ectoderm and the mesoderm .

➡ Triploblastic animals are bilaterally symmetric .

➡ Have true organs .

Answer 2

${\mathfrak{\green{\underline{\underline{Diploblastic:-}}}}}$

✯ Diploblastic means having 2 layers of cells from which differentiated tissues can be seen.

✯ Body wall develops from two embryonic germ layers - ectoderm and endoderms and persists as such in adult.

✯ Non-cellular, gelatinous mesogloea is present in between ectiderm and endoderm.

✯ Coelom is absent, E.g. - Hydra (Coelenterates), sponges (Porifera).

${\mathfrak{\green{\underline{\underline{Triploblastic:-}}}}}$

✯ Triploblastic means having 3 layers of cells from which differentiated tissues can be seen.

✯ Body develops from 3 germ layer - ectoderm, mesoderm and endoderms.

✯ Mesogloea is absent and mesoderm is present.

✯ Coelom is present, E.g. - platy-helminthes, annelids, arthropods and echinoderms.