write any two important charactistic features of pteridophyta and Echinodermata
Answers
Answer:
Characteristics of Echinodermata
They have a star-like appearance and are spherical or elongated. They are exclusively marine animals. The organisms are spiny-skinned. They exhibit organ level of organization.
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Explanation:
☆••☆ FEATURES OF ECHINODERMATA:-
• They are spiny bodied organisms with exoskeleton of cancerous ossicles.
• They are Triploblastic and coelomate.
• Fertilization is external.
• Indirect Development.
• Sexual Reproduction.
• Sexes are separate.
☆•••☆ FEATURES OF PTRIDOPHYTA:-
• First Terrestrial plants.
• Prefer cool, damp and shady places to grow.
• Growth as ornaments.
• Used for medical purpose, as soil blinders.
• Main plant body is sporopyte which is differentiated into true root, stem and leaves.
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