Question

Write four distinguishing characters of phylum- Echinodermata​

Answer 1

Answer:

Characteristic features of Echinodermata are:

their skeleton is made up of calcareous spines/ossicles (plates). they show radial symmetry in adult stage whereas they show bilateral symmetry in larval stage. these animals have the ability of regeneration. they are found only in oceans.

Answer 2

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Classification of Echinodermata

• They have a flattened, star-shaped body with five arms.
• They have tube feet with suckers.
• They respire through papulae.
• The body comprises of calcareous plates and movable spines.
• dy comprises of calcareous plates and movable spines.
• Pedicellaria is present.
• Eg., Asterias, Zoroaster.