Animalscaretips
Cnidarians have two body forms—polyp and medusa—which often occur within the life cycle of a single cnidarian. Sea nettle (Chrysaora fuscescens).
- Is jellyfish a polyp or medusa?
- Which of the following animals have both a polyp and a medusa body plan during their life cycle?
- What animals have polyps?
- What animal is a medusa?
- Is Hydra a polyp or medusa?
- Is Coral a medusa or polyp?
- What's the difference between medusa and polyp?
- Which is an example of a polyp body type?
- What is polyp and medusa in cnidarians?
- Where are polyp and medusa found?
- Which came first the polyp of the medusa?
- What is polip?
- Is Adamsia a polyp?
- Which group does not contain polyp?
- Is Cubozoa a medusa or polyp?
Is jellyfish a polyp or medusa?
Jellyfish have a stalked (polyp) phase, when they are attached to coastal reefs, and a jellyfish (medusa) phase, when they float among the plankton. The medusa is the reproductive stage; their eggs are fertilised internally and develop into free-swimming planula larvae.
Which of the following animals have both a polyp and a medusa body plan during their life cycle?
Cnidarians have two distinct body plans, the medusa (a) and the polyp (b). All cnidarians have two membrane layers, with a jelly-like mesoglea between them. Some cnidarians are dimorphic, that is, they exhibit both body plans during their life cycle.
What animals have polyps?
polyp, in zoology, one of two principal body forms occurring in members of the animal phylum Cnidaria. The polyp may be solitary, as in the sea anemone, or colonial, as in coral, and is sessile (attached to a surface).
What animal is a medusa?
medusa, in zoology, one of two principal body types occurring in members of the invertebrate animal phylum Cnidaria. It is the typical form of the jellyfish. The medusoid body is bell- or umbrella-shaped.
Is Hydra a polyp or medusa?
Hydra exists in both forms: Polyp and Medusa. These forms are dependent upon nutritional content of the living environment. Medusa is the adult and sexual form whereas Polyp is juvenile and asexual form. Under harsh living conditions and starvation, hydra reproduces sexually.
Is Coral a medusa or polyp?
Classes. In the class Anthozoa, comprising the sea anemones and corals, the individual is always a polyp; in the class Hydrozoa, however, the individual may be either a polyp or a medusa, with most species undergoing a life cycle with both a polyp stage and a medusa stage.
What's the difference between medusa and polyp?
Polyp are sessile while medusa are mobile. Polyp present a tubular shape with the mouth facing the water upwards,while medusa present a bell shape with the mouth facing the water downwards. ... Polyp produce either polyp or medusa by budding, while medusa produce only medusa.
Which is an example of a polyp body type?
An example of the polyp form is Hydra spp.; perhaps the most well-known medusoid animals are the jellies (jellyfish). Polyp forms are sessile as adults, with a single opening to the digestive system (the mouth) facing up with tentacles surrounding it.
What is polyp and medusa in cnidarians?
There are two basic cnidarian body shapes: a polyp form, which is attached to a surface; and an upside-down free-floating form called a medusa. Some cnidarians change form at different phases of their life cycle, while others remain in one form for their entire life.
Where are polyp and medusa found?
polyp and medusa, names for the two body forms, one nonmotile and one typically free swimming, found in the aquatic invertebrate phylum Cnidaria (the coelenterates).
Which came first the polyp of the medusa?
The phylogenetic results suggest that: the polyp probably preceded the medusa in the evolution of Cnidaria; within Hydrozoa, medusa development involving the entocodon is ancestral; within Trachylina, the polyp was lost and subsequently regained in the parasitic narcomedusans; within Siphonophorae, the float originated ...
What is polip?
A polyp is a projecting growth of tissue from a surface in the body, usually a mucous membrane. Polyps can develop in the: colon and rectum. ear canal. cervix.
Is Adamsia a polyp?
Polyp is sessile and cylinderical form like Adamsia (b). Medusa is unbrella shaped and free-living like Aurelia (c). Polyp produce medusae sexually and medusae form the polyp asexually (e.g., Obelia). ... Metagenesis is seen in jelly fish.
Which group does not contain polyp?
Hydrozoa, Scyphozoa and Anthozoa are classes of the Cnidarians or Coelenterata that all have similar body morphology with a polyp and/or medusa. The class Calcarea consists of Sponges from the phylum Porifera whose body is covered with a calcareous shell and spicules but no polyp.
Is Cubozoa a medusa or polyp?
Cubozoans exist in a polypoid form that develops from a planula larva. These polyps show limited mobility along the substratum. As with scyphozoans, they may bud to form more polyps to colonize a habitat.
