Gonangia Definition & Meaning - Merriam-Webster
The meaning of GONANGIUM is a reproductive member of a hydrozoan colony producing gonophores or medusa buds.
Obelia geniculata - Wikipedia
O. geniculata have two distinct forms – polyp and medusa, also known as hydranths and gonangia, respectively. [5] The horizontal portion of the hydranth is called the hydrorhiza. [6] The hydrorhiza is the structure that attaches to the other hydranths as well as the substrate.
Life Cycle of Obelia - Diagram, Structure and Classification
2024年2月20日 · In Obelia, certain specialized polyps called gonozooids produce reproductive structures called gonangia, which give rise to the next stage in the life cycle. 4. Medusae Stage. Meanwhile, certain hydranths transform through a process known as strobilation to form the medusae stage. These are the sexual zooids and are also called the gonophores.
(PDF) Gonangium development and medusoid of N emalecium …
2000年12月1日 · The gonangia pass through six developmental phases: growing, ripening, migrating, stripping, liberating and spawning.
The gonangia pass through six developmental phases: growing, ripening, migrating, stripping, liberating and spawning.
Obelia - Cronodon
reproductive polyps (gonangia or blastostyles) generally grow from axils or angles in the colony, typically in the angle between a hydranth and its parent stalk.
Grouping of gonomedusae in gonangia, particularly when the gonomedusae are sessile, has been accompanied by an elaboration of both the somatic tissues of the gonangium and the acellular theca.
Obelia: General Characters and Life cycle | Study&Score - Study …
2017年11月30日 · In the older polyps cylindrical reproductive zooids are placed which is known as blastostyle or gonangia. This Obelia colony is dimorphic exhibiting two types of zooids. When the blastostyles develop saucer-shaped bodies called as medusae, the dimorphic colony becomes trimorphic.
gonangia, thus obelia colony is dimorphic and when gonangia produces saucer shaped buds as a result of asexual reproduction and develops into sexual zooids called medusae, obelia colony becomes trimorphic colony.When only polyps are present the colony is described as monomorphic colony.
Differentiation of the female reproductive body in the colonial ...
A comparison of two genetic stocks of Campanularia flexuosa revealed consistent differences with respect to (1) the number of eggs present in the mature female reproductive body (gonangium), (2) the level on each upright stem at which the first gonangium forms, and (3) their preference for the formation of reproductive versus vegetative (side-br...