Which of the following is also known by the common name ''bath sponge''

Concept:

• Sponges belong to the phylum Porifera. They are generally marine and mostly asymmetrical animals.
• These are primitive multicellular animals and have a cellular level of organization.

​Explanation:

Euspongia is a marine water sponge, it is also known by the name ''Bath sponge''

Other important characters of Sponges:

• Sponges have a water transport or canal system. Water enters through minute pores (ostia) in the body wall into a central cavity, spongocoel, from where it goes out through the osculum.
• This pathway of water transport is helpful in food gathering, respiratory exchange, and removal of waste. Choanocytes or collar cells line the spongocoel and the canals.
• Digestion is intracellular. The body is supported by a skeleton made up of spicules or spongin fibers.
• Sexes are not separate (hermaphrodite), i.e., eggs and sperms are produced by the same individual.
• Sponges reproduce asexually by fragmentation and sexually by the formation of gametes.
• Fertilization is internal and development is indirect having a larval stage that is morphologically distinct from the adult

               Euspongia

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