Medusa: The medusa is a modified zooid produced as a hollow bud from the coenosarc of the blastostyle in spring and summer. Medusa swims freely on the surface water.

The below mentioned article provides a diagram of obelia medusa. 1. It is the slide of Obelia medusa which is a reproductive zooid responsible for giving rise to new progeny. 2. These are saucer-like or umbrella- shaped structures and are developed from blastostyles asexually. 3. All along the margin they bear a ring of tentacles (velum). 4.

Obelia is a genus of hydrozoans, a class of mainly marine and some freshwater animal species that have both polyp and medusa stages in their life cycle. Hydrozoa belongs to the phylum Cnidaria, which are aquatic (mainly marine) organisms that are relatively simple in structure with a diameter around 1mm. [1]

2024年2月20日 · This alternation typically involves two main stages in Obelia: the polyp and medusa. The polyp is responsible for feeding and asexual reproduction by budding. The medusa stage consists of the formation of free-swimming, bell-shaped structures known as medusae.

The below mentioned article provides a diagram of obelia medusa. 1. It is the slide of Obelia medusa which is a reproductive zooid responsible for giving rise to new progeny. 2. These are saucer-like or umbrella- shaped structures and are developed from blastostyles asexually. 3. All along the margin they bear a ring of tentacles (velum). 4.

Obelia is representative of typical hydrozoan morphology and possesses a life cycle in which polyp and medusa are of approximately equal importance. There are several species of Obelia and any can be used for this exercise.

In this article we will discuss about the life cycle of obelia, explained with the help of suitable diagrams. Description of Obelia: 1. It is a branched, fixed colony (Fig 20.12). Some of the horizontal branches anchoring the colony on some support are called Hydrorhiza while other branches are vertical and known as Hydrocaulus.

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2024年3月21日 · Medusae lay eggs that, when fertilised, evolve into hydroids. Through asexual reproduction, hydroids create medusae. This phenomenon was formerly known as “generational succession.” Obelia is a colonial, sessile marine organism that adheres to seaweeds, rocks, lumber piles, and mollusk shells in shallow water.

Obelia’s life cycle alternates between hydroid and medusoid phases on a regular occasion. Medusae lay eggs, which develop into hydroids following fertilisation. Asexual budding is how hydroids produce medusae. This phenomenon was originally known as …