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What is the difference between poriferans and porifere?
Porifera is name of phylum and animals belonging to it are called poriferans.
How do protozoans differ from poriferans?
protozoans are tiny,single celld organism. they are very small and it can be only seen trhough a microscope. poriferans are the simplest of the many celled animals their bodies are made up of hollow tubes with pores or openings on the side
What primary characteristics of animals are not exhibited by the poriferans?
Poriferans (sponges) lack many common characteristics of animals such as a head or a mouth. Typically poriferans do not have eyes, ears, as well as other sense organs. Poriferans do not possess major organs such as heart, stomach, muscles, or even a nervous system.
What are the examples of poriferans?
Sponge
What the example of poriferans?
Sponge
What are habitat of poriferans and coelentrates?
All poriferans and coelenterates live in water, most of them in sea water, but some in fresh water. Poriferans are bottom-dwellers. Coelenterates can be free-swimming, fixed to the bottom or live in colonies fixed to the bottom, depending on species and face of life.
How does method by which cnidarians obtain food differ from method by which poriferans obtain food?
Poriferans needs organic substances and cnidarians needs of a gastrovascular cavity with openings.
How are cnidarians an improvement upon poriferans?
well defined true tissue level of organization first to move having primitive muscles and nerves, becomes first active predator
Do poriferas have brains?
No, poriferans do not have brains or any other organs.
How do poriferans reproduce?
Poriferans, or sponges, primarily reproduce asexually through budding or fragmentation, where a part of the sponge breaks off and develops into a new individual. They can also reproduce sexually, with many species being hermaphroditic, producing both eggs and sperm. Fertilization typically occurs in the water column, and the resulting larvae are free-swimming before settling to form new sponges. This dual mode of reproduction allows poriferans to adapt to various environmental conditions.
What evidence exists to support the idea that poriferans evolved from protists?
One piece of evidence supporting the idea that poriferans evolved from protists is the similarity in genetic sequences between certain protists and sponges. Additionally, some protists share characteristics with poriferans, such as the presence of collar cells, which suggests a possible evolutionary relationship between the two groups. Studies of early fossil records also provide some evidence of a transitional form between protists and sponges.
What type of symmetry do phylum porifera have?
Phylum Porifera sponges have radial symmetry.
