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A gonophore is a reproductive organ in members of the Hydrozoa which produces gametes. It is a sporosac, a medusa or any intermediate stage. The name is derived from the Greek words γόνος (gónos, "that which produces seed") and -φόρος (-fóros, "-bearing"). Gonophores are borne on branching stalks that … 展开
In the order Leptomedusae, the gonophores are borne on much-reduced hydranths and are usually protected in a peridermal (i.e. belonging to a hydroid perisarc) gonotheca. Medusae forming on fully developed … 展开
CC-BY-SA 许可证中的维基百科文本 Gonopore - Wikipedia
A gonopore, sometimes called a gonadopore, is a genital pore in many invertebrates. Hexapods, including insects, have a single common gonopore, except mayflies, which have a pair of gonopores. More specifically, in the unmodified female, it is the opening of the common oviduct, and in the male, it is the opening of the ejaculatory duct.
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Gonophore - Wikiwand / articles
网页A gonophore is a reproductive organ in members of the Hydrozoa which produces gametes. It is a sporosac, a medusa or any intermediate stage. The name is derived from the …
Nucleoid - Wikipedia
网页The nucleoid (meaning nucleus -like) is an irregularly shaped region within the prokaryotic cell that contains all or most of the genetic material. [1][2][3] The chromosome of a typical …
Gonophore | zoology | Britannica
网页coelenterate reproduction. In reproductive behaviour: Coelenterates. …a colony, reproductive individuals called gonophores develop into free-swimming organisms …
Gonopore - Wikiwand
网页A gonopore, sometimes called a gonadopore, is a genital pore in many invertebrates. Hexapods, including insects have a single common gonopore, except mayflies, which …
Gonopore - an overview | ScienceDirect Topics
网页Common or hermaphrodite gonads are only found in Retronectidae (Catenulida), Acoela, and Nemertodermatida. In Retronectidae, the gonads are clearly delineated ( Sterrer and …
Gonophore - Oxford Reference
网页"gonophore" published on by null. "gonophore" published on by null. 1. in sessile coelenterates, the bud producing the reproductive medusae. 2. in higher animals, any …
Coenobita Gonopore - The Crab Street Journal
网页2015年5月31日 · Gonpores are the openings of reproductive system to exterior. In male, pore on basal segment (coxa) of last (eighth) thoracopods; in female, pore on coxa of sixth thoracopods (third pereopods) [1] …
Global Diversity and Review of Siphonophorae (Cnidaria: Hydrozoa)
网页2014年2月6日 · Free-living eudoxids comprise a single bract (conical buoyant zooid) covering a gastrozooid with tentacle and a gonophore (see below). More gonophores …
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