What Animal Is Medusa?
Medusa is one of the two body forms present in the animals of the phylum Cnidaria. Medusa is the free-swimming... View Article
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What Opening the Cnidarians Use to Remove the Waste?
The gastro-vascular cavity or coelenteron has a single opening through which food enters as well as expelled out. The mouth... View Article
What Are the Two Stages in the Life Cycle of Cnidarians?
The two forms of cnidarians are polyp and medusae. A polyp is a sedentary form, whereas medusae are free-swimming. Some... View Article
How Do Cnidaria Move?
Polyps are sedentary, whereas medusae are free-swimming forms. It contracts and forces water out, which helps the organism in propelling... View Article
What Is the Function of Tentacles in Cnidaria?
Tentacles have cnidoblasts (stinging cells) at the tip, which capture and immobilise the prey. Tentacles move the captured food to... View Article
Does Cnidaria Have a Skeleton?
The water-filled coelenteron acts as a hydrostatic skeleton in polyps. In medusae, the mesoglea layer provides support. Some of the... View Article
How Do Cnidaria Feed?
Cnidarians are carnivorous. They immobilise their prey by toxins released from nematocysts. Once captured, tentacles move the food to the... View Article
What Animals Belong to Phylum Cnidaria?
Phylum Cnidaria mostly contains marine aquatic animals, which are sessile or free-swimming. It includes hydra, jellyfish, corals, sea anemone, etc.... View Article
What Are 5 Characteristics of Cnidarians?
The five main characteristics of cnidarians are: Radial symmetry Diploblastic animals Tissue level of organisation Presence of cnidoblasts with stinging... View Article
Why Is Coelenterata Also Called Cnidaria?
Phylum Coelenterata is also known as Cnidaria due to the presence of cnidoblasts or cnidocytes on the tentacles and body... View Article
Which Class of Phylum Cnidaria Lacks a Medusa Stage?
Cnidarians exhibit polymorphism and have two body forms, viz. polyp and medusa. Medusa is an umbrella-shaped and free-swimming form. The... View Article
What Is the Function of Cnidoblast in Phylum Cnidaria?
Cnidoblasts are the characteristic feature of the phylum Cnidaria. These are present on the body surface and tentacles. They contain... View Article
What Are Zooids in Cnidaria?
Zooids are the individual polyps present in the colonies of hydroids. Individual zooids in the colony perform various different tasks... View Article
Are Porifera and Cnidaria Acoelomates?
Yes, animals of the phylum Porifera and Cnidaria are acoelomates. They do not possess a body cavity, which is lined... View Article
Is Cnidaria Diploblastic or Triploblastic?
Cnidarians are diploblastic. The embryonic layer constitutes ectoderm and endoderm. Mesoglea is present between ectoderm and endoderm, which is an... View Article
Is Cnidaria and Coelenterata the Same?
Coelenterata is the other name of the phylum Cnidaria. It contains mostly marine aquatic animals such as hydra, jellyfish, coral,... View Article
How Do Cnidaria Excrete Waste?
There is no specialised excretory system found in cnidarians. Most of the cnidarians expel their waste out through the body... View Article
How Do Animals of Porifera Differ from Animals of Cnidaria?
Animals of the phylum Porifera have an asymmetrical body with the cellular level of body organisation, whereas cnidarians have radial... View Article
How Cnidaria Jellyfish Defend Themselves?
Cnidarians are characterised by the presence of cnidoblasts or cnidocytes. They contain nematocysts, which is a stinging capsule present on... View Article
Does Cnidaria Have a Digestive System?
The digestive system of cnidarians is incomplete. The central gastro-vascular cavity has only one opening, which is used as a... View Article
