0
Cnidarians
Cnidarians are aquatic animals belonging to the phylum Cnidaria. Common cnidarians include to jellyfish, sea anemones, corals and the Portuguese Man o' War. Questions about all species of cnidarians can be directed here.
669 Questions
What are the main characteristics of sponges cnidarians and worms?
Sponges are invertebrate animals that usually have no body symmetry and never have tissues or organs. Cnidarians use stinging cells to capture food and defend themselves. Flatworms are flat and as soft as jelly. Unlike cnidarians or flatworms, roundworms have a digestive system that is like a tube, open at both ends. Earthworms and other segmented worms have bodies made up of many linked sections called segments.
What is the most common form of behavior in simple animals like cnidarians worms?
instinctive behavior
No. They are animals that consume other animals (carnivore, and at least second level consumer). PRODUCERS MAKE THEIR OWN FOOD.
A jellyfish is the medusoid stadium of animals belonging to phyum Cnidaria, subphylum Medusozoa, which include:
- class: Scyphozoa
- class: Cubozoa
- class: Staurozoa
- class: Hydrozoa (only some hydrozoans have a medusoid stadium, so not all of them have jellyfishes)
- class: Polypodiozoa
What is An anthozoan that lives in colonies that secretes a hard outer skeleton.?
Anthozoans that live in colonies ans secrete hard outer skeleton are called corals . Corals are found in warm seas . They form coral reefs and coral islands .
No , sea animone is not cephalized . It lacks head and brain .
Where in San Diego are the Coral Bay Apartments located?
The Coral Bay Apartments development can be found on Cowley Way, a short distance from Clairemont Drive (via Calle Neil). The complex is closely located to Mission Bay.
What are the fingerlike extensions with specialized stinging cells found on all cnidarians?
They're called cnidocytes. ^^
Are Cnidarians in cephalization?
Cephalization means formation of a head. Cnidarians have no head, so no.
The hydra has a nervous system characterized by a nerve net. A nerve net is a collection of separate, but "connected" neurons. Neurons are connected by synapse. Communication between neurons can be in both directions at the synapse within a nerve net. The nerve net is concentrated around the mouth. Unlike higher animals, the hydra does not have any grouping of nerve cell bodies. In other words, there are no ganglia.
The hydra does have specialized cells for touch and chemical detection.
Are spnges and cnidarians verebrate or invertebrate?
I assume you mean sponges, and they are obviously invertabrates (they lack a back bone).
Is there a planet name Aurelia?
yes , in other galaxy . I've read it at Google . i saw some pictures too . and i was shocked . Try to search it . ;))) it was extraordinary !
What is stinging cells of the hydra?
The stinging cells in the hydra is what helps it paralyze its prey. Once it uses its stinging cells to paralyze it, the hydra then uses its tentacles to push into itsslef considering that its only one cell layer thin.
What are hydra's support system?
The gastrovascular cavity acts as a hydrostatic skeleton against which the contractile cells work.
