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What does Phylum cnidaria have instead of a circulatory system?
Wiki User
∙ 15y ago
Cnidarians have a hydrostatic skeleton, this means the body is supported by the liquid that fills it. They have a central cavity surrounded by two layers of tissue, the ectotherm and endotherm. The jellyfish has no circulatory system but a nervous system. It has some muscle fibers controlled by the network of nerves. IT has no brain to coordinate its reactions.
Wiki User
∙ 15y ago
Phylum Cnidaria, which includes jellyfish and corals, does not have a circulatory system. Instead, they rely on diffusion to transport nutrients and gases throughout their body. This is possible due to their simple body structure and the presence of gastrovascular cavities.
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What type of circulatory system does Phylum cnidaria have?
Phylum Cnidaria (e.g. jellyfish, corals) have an open circulatory system. This means that their circulatory fluid, called coelomic fluid, bathes their internal organs directly in nutrients and oxygen. There is no distinction between blood and interstitial fluid in an open circulatory system.
Does the phylum platyhelminthes have a circulatory system?
No, the phylum Platyhelminthes does not have a circulatory system. They rely on simple diffusion to transport nutrients and gases within their bodies.
Why are leeches classified in phylum annelida?
Leeches are classified in phylum Annelida because they have segmented bodies with repeated body segments. They also have a closed circulatory system and belong to the subclass Hirudinea within the phylum Annelida.
What type of respiratory system does Phylum Cnidaria have?
Phylum Cnidaria has a simple sac-like structure known as a gastrovascular cavity that serves both as a digestive and respiratory system. Oxygen diffuses into the cells of the organism directly from this cavity.
What is a common feature of phylum platyhelminthes?
A common feature of phylum Platyhelminthes is their flattened, ribbon-like body shape, which gives them their name (platy meaning flat). They also lack a body cavity (coelom) and have a simple nervous system with nerve cords and ganglia.
What type of circulatory system does Phylum cnidaria have?
Phylum Cnidaria (e.g. jellyfish, corals) have an open circulatory system. This means that their circulatory fluid, called coelomic fluid, bathes their internal organs directly in nutrients and oxygen. There is no distinction between blood and interstitial fluid in an open circulatory system.
Does the phylum platyhelminthes have a circulatory system?
No, the phylum Platyhelminthes does not have a circulatory system. They rely on simple diffusion to transport nutrients and gases within their bodies.
What is the circulation of cnidaria?
where their blood circulates through an open-circulatory system
Which animal phylum was the first to have a circulatory system?
Annelida
Which phyla have segmented bodies and a close blood system?
phulum Annelida and phylum Arthropoda have segmented bodies and only phylum Annelida has closed circulatory system while Arthropodes have open circulatory system
The circulatory system of most mollusks is known as an?
most animilia in phylum mollusca have an open ciculatory system along with a false ceolom
What is a common feature of phylum platyhelminthes?
A common feature of phylum Platyhelminthes is their flattened, ribbon-like body shape, which gives them their name (platy meaning flat). They also lack a body cavity (coelom) and have a simple nervous system with nerve cords and ganglia.
Do jellyfish and coral belong to the same phylum cnidaria?
Coral and Jellyfish are classified together because share characteristic such as radically symmetrical, simple net nervous system, distinct larva stage. The classification is the phylum Cnidaria.
How does a sponge circulatory system work?
Poriferans do not have distinct circulatory system. Instead water flow system support all these functions like circulatory, respiratory, excretory etc.
How many gut openings do chordates have?
A cnidarian has an incomplete gut with just one opening. BTW Those who said that "How many openings does cnidaria have?" and "How many opening does an earthworm have" are the same question are idiots. An earthworm in an annelid, or a member of phylum Annelida. Cnidarians are in an entirely different and less developed phylum, that is, phylum Cnidaria. So there. STAY IN SCHOOL!
What type of circulatory system does phylum arthropoda have?
close circulatory system
Why isn't a jellyfish a fish?
Jellifish and fish are animals evolved from different ancestors. While jellifish belong to phylum Cnidaria and have a radial simmetry, fishes are vertebrate, have bilateral simmetry and belong to phylum Chordata, having a notochord, a complete digestive system and a neural cord.
