Biology, asked by vandanasingh43, 6 months ago

cnidarians have pores all over the body true false​

Answers

Answered by opfinatic666
5

Answer:

False

Explanation:

Poriferans have pores all over the body .

Answered by demobectranuser121
1

Answer:

first you mark me as brainlist answer please I then I will say

cnidarians have pores all over the body false because

Explanation:

Nearly all (about 99 percent) cnidarians are marine species. Cnidarians contain specialized cells known as cnidocytes (“stinging cells”), which contain organelles called nematocysts (stingers). ... Cnidocytes: Animals from the phylum Cnidaria have stinging cells called cnidocytes.Sponges are among the most primitive of all animals. They are immobile, and live by filtering detritus from the water. They have no brains or, for that matter, any neurons, organs or even tissuesEcology of Cnidarians

Cnidarians can be found in almost all ocean habitats. They may live in water that is shallow or deep, warm or cold. A few species live in freshwater.In addition to a primitive digestive cavity, cnidarians have a decentralized nervous system, muscle tissue, reproductive tissues, and a hydrostatic skeleton. A hydrostatic skeleton is maintained by the internal pressure of fluids within the organism.Both can live in either fresh or sea water. Porifera are aquatic organisms known as sponges, while cnidarians are for example jellyfishes, corrals, etc. Poriferans are the most simple multicellular animal organisms. They are always sessile while cnidarians may be sessile (the corrals) or free living (jellyfishes).Cnidarians have nerve cells that are organized in a nerve net – a diffuse network where neurons interact wherever they cross one another. There are two contrasting types of body symmetry: radial and bilateral. Nerve nets are associated with the former and central nervous systems with the latter.

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