Medusa zoology definition
Webmedusa ( mɪˈdjuːzə) n, pl -sas or -sae ( -ziː) 1. (Animals) another name for jellyfish 1, jellyfish 2 2. (Zoology) Also called: medusoid or medusan one of the two forms in which … Web2 mrt. 2024 · Most medusae are slow-swimming, planktonic animals. In contrast, the mouth and surrounding tentacles of polyps face upward, and the cylindrical body is generally attached by its opposite end to a firm substratum. The mouth is at the end of a manubrium in many hydrozoan polyps.
Medusa zoology definition
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WebCauses of Polymorphism: ADVERTISEMENTS: Polymorphism is due to the division of labour, diversification of forms and specialization. Two general types of interactions, viz., co-operation and disoperation are exhibited by the members of an animal association. In the colonial forms, disoperation ceases gradually and is replaced by co-operation. Webnoun. Zoology. a sedentary type of animal form characterized by a more or less fixed base, columnar body, and free end with mouth and tentacles, especially as applied to …
Web27 mrt. 2024 · medusa in British English. (mɪˈdjuːzə ) noun Word forms: plural -sas or -sae (-ziː ) 1. another name for jellyfish (sense 1), jellyfish (sense 2) 2. Also called: medusoid, medusan. one of the two forms in which a coelenterate exists. It has a jelly-like umbrella-shaped body, is free swimming, and produces gametes. Compare polyp. WebMedusa theory: This theory is forwarded by Haeckel, Balfour and Sedgwick. The theory advocates that the primitive zooid of polymorphic colony was, with all probabilities, a …
WebMedusae, (sexual zooids). In fact, to start with Obelia is a monomorphic form having polyp only but later due to the development of blastostyle it becomes a dimorphic colony and … Webmedusa, 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 …
Web24 feb. 2024 · Definition noun, plural: polyps (1) (zoology) The hollow, columnar, sessile form of Cnidarians (as opposed to the medusa form) (2) (pathology) An abnormal …
Web25 jan. 2024 · Phylum Cnidaria Definition. Phylum Cnidaria is also known as Phylum Coelenterate.This phylum consists of radially or radially symmetrical aquatic invertebrates having unique stinging structures in the tentacles surrounding the mouth. The organisms of this species mainly belong to marine life, and hardly a few live in freshwater.This phylum … oversized shirt outfit menWeb11 mrt. 2024 · Planula stages been definition as anything von early gastrula, 1-,2- or 3-day-old planula; polish any of stolon, primary polyp, poll head; medusa of any baby medusa, mature medusa or male medusen. The gonozooid public was ignored with this classification as inspection starting his expressed genes (and PCA) indicates that it is, as expected, a … oversized shirt outfits with jeansWeb31 mrt. 2024 · Uffizi, Florence. Het monster Medusa is de bekendste van de drie Gorgonen, de monsterlijke dochters van de zeegod Phorcys en het zeemonster Ceto. Ze is vooral bekend dankzij de mythe van de held Perseus. Medusa had een weelderige haardos, bestaande uit kronkelende slangen. Ze was bijzonder mooi, maar dat bracht haar vooral … oversized shirt over bikiniWeb1 : the sessile form of cnidarian (such as a coral or sea anemone) typically having a hollow cylindrical body closed and attached at one end and opening at the other by a central mouth surrounded by tentacles armed with nematocysts 2 : a growth projecting from a mucous membrane (as of the colon or vocal cords) polypoid ˈpä-lə-ˌpȯid adjective oversized shirt outfit ideas menWeb7 jul. 2016 · Material and methods. Hydroid colonies of Turritopsis dohrnii were collected on 2 September 2013 by SCUBA diving in Santa Caterina, Lecce (40°8ʹ30.01ʹʹN, 17°58ʹ43.98ʹʹE), off the Italian coasts of the Ionian Sea (approximately 2 m depth). In the laboratory, colonies including polyps with medusa buds were separated, transferred to … oversized shirt outfit women\u0027sWeb(ˈnɛmətəˌsɪst , nɪˈmætə- ) noun a structure in coelenterates, such as jellyfish, consisting of a capsule containing a hollow coiled thread that can be everted to sting or paralyse prey … oversized shirt pajamasWeb30 nov. 2024 · Medusae: These are small, transparent, solitary, free swimming saucer-shaped or bell-shaped zooids. They measure about 6 mm in diameter. These are the reproductive zooids which produce the sex cells. The inner concave side of the body is known as sub-umbrella and outer convex as exumbrella. ranch king 38 inch lawn sweeper