Porifera Flashcards
What are members of the phylum Porifera commonly known as?
Members of this phylum are commonly known as sponges.
What type of animals are sponges?
Sponges are generally marine and mostly asymmetrical animals.
What level of organization do sponges have?
Sponges have a cellular level of organization.
What system do sponges have for water transport?
Sponges have a water transport or canal system.
How does water enter and exit a sponge?
Water enters through minute pores (ostia) into a central cavity (spongocoel) and exits through the osculum.
What are the functions of the water transport system in sponges?
The water transport system is helpful in food gathering, respiratory exchange, and removal of waste.
What cells line the spongocoel and canals in sponges?
Choanocytes or collar cells line the spongocoel and the canals.
How does digestion occur in sponges?
Digestion in sponges is intracellular.
What supports the body of sponges?
The body is supported by a skeleton made up of spicules or spongin fibers.
Are sponges hermaphroditic?
Yes, sponges are hermaphroditic, meaning they produce both eggs and sperm.
How do sponges reproduce?
Sponges reproduce asexually by fragmentation and sexually by formation of gametes.
What type of fertilization do sponges have?
Fertilization in sponges is internal.
What is the development process of sponges?
Development in sponges is indirect, having a larval stage morphologically distinct from the adult.
Sycon
Scyhpa
Porifera
Spongilla
Fresh water sponge
Porifera
