Question

some characteristics of phylum Coelenterata​

Answer 1

Answer:

Characteristics of Coelenterata

• These are mostly aquatic or marine habitat animals.
• These species exhibit a tissue-level organization.
• The mouth is enclosed by thin and short tentacles.
• They are diploblastic animals, in which, the body is made up of two layers of cells:

1. Ectoderm – One layer makes up the cells outside the body
2. Endoderm – the other forms the inner lining of the body.

• They have cavities in their body.
• The body is radially symmetrical.
• The digestion is both intracellular and extracellular.
• The nervous system and the circulatory system is absent.
• They excrete and respire through simple diffusion.
• The mode of reproduction is asexual, which is through budding.
• The sexual mode of reproduction is seen only in a few Coelenterates.

E.g., Hydra, Rhizostoma, Xenia, etc.

Explanation:

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Answer 2

$\overbrace{\underbrace{\orange{\bold{\huge{Coelenterate-}}}}}$

• These are mostly aquatic or marine habitat animals.
• These species exhibit a tissue-level organization.
• The mouth is enclosed by thin and short tentacles.
• They are diploblastic animals, in which, the body is made up of two layers of cells:

1. Ectoderm – One layer makes up the cells outside the body
2. Endoderm – the other forms the inner lining of the body.

• They have cavities in their body.
• The body is radially symmetrical.
• The digestion is both intracellular and extracellular.
• The nervous system and the circulatory system is absent.
• They excrete and respire through simple diffusion.
• The mode of reproduction is asexual, which is through budding.
• The sexual mode of reproduction is seen only in a few Coelenterates.
• E.g., Hydra, Rhizostoma, Xenia, etc.

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