What is correct about triploblastic animals?

Correct answer: A. They show bilateral symmetry

  • A. They show bilateral symmetry
  • B. They show both radial and bilateral symmetry
  • C. They are all protostomes
  • D. They are all deuterostomes

Explanation

Triploblastic animals are characterized by having three primary germ layers: ectoderm, mesoderm, and endoderm. These animals predominantly exhibit bilateral symmetry, which is a common feature across this group. However, there are exceptions, such as adult echinoderms, which show radial symmetry. The statement that triploblastic animals are all protostomes or all deuterostomes is incorrect, as the group includes both types of developmental patterns. Therefore, none of the provided options fully capture the characteristics of all triploblastic animals.

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About Kingdom Animalia

Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.

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