WebExplain why different kinds of radiation affect biological tissues differently, even though the amount of radiation exposure may be the same. Verified answer. physics. An unknown planet at a distance of 10-12 m from Earth is observed by a telescope that has a focal length of the eyepiece of 1 cm and a focal length of the objective of 1 m. WebJul 29, 2024 · Based on the number of germ layers, animals are 2 types- Diploblastic and Triploblastic. Diploblastic animals: 2 germ layers- outer ectoderm and inner endoderm. In between these layers, an undifferentiated jelly-like layer called mesoglea is present. E.g. Cnidaria & Ctenophora.
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Weba. annelids and ctenophores. b. echinoderms and chordates. c. arthropods and chordates. d. cnidarians and sponges. b. echinoderms and chordates. a major difference between the development of invertebrates and vertebrates is that. a. most invertebrates undergo indirect development while most vertebrates undergo direct development. WebTissue layers (diploblastic vs. triploblastic) and body plans: With the exception of the phylum Porifera (sponges), all animals have tissues that derive from embryonic germ …
WebDiploblastic animals, Cnidaria and ctenophores, show an increase in complexity over sponges, having two germ layers, the endoderm and ectoderm. Diploblastic animals are organized into recognizable tissues. All higher animals (from flatworms to man) are triploblastic, possessing a mesoderm in addition to the germ layers found in diploblasts. Web31 cards in this deck. Last Universal Common Ancestor. cells, central dogma, atp, organic c-h bonds. Bacteria. peptidoglycan, short rna polymerase, translations begins with n-formyl... Archaea and Eukarya. histone proteins, long rna polymerase, translation begins with methionine. Eukarya. linear chromosomes, nuclear envelope, membrane bound ...
WebSep 1, 2015 · Acoelomate: They lack a coelom ie. there's no space between the germ layers (ectoderm, mesoderm and endoderm) in these animals. Porifera, Cnidarians, Ctenophora and Platyhelminthes are acoelomates. Pseudo coelomate: They lack a true coelom. The false cavity is formed as the mesoderm forms pouches leaving space in … WebWhich phylum contains members that have only two germ layers, have eight rows of cilia for locomotion, and use two tentacles with sticky substances for capturing prey? Ctenphora. The earliest-diverging animal phylum is. Cilia. Ctenophores use _____ to propel themselves in the water column. Group of cells that have similar structure and function.
Weba. can carry out their tasks more effectively than cells that must do many tasks. b. are found only in chordates and echinoderms. c. always operate independently of all other cells. d. All of the above. c. a tissue. A group of similar cells organized into a functional unit is called. a. a nervous system.
Like sponges and cnidarians, ctenophores have two main layers of cells that sandwich a middle layer of jelly-like material, which is called the mesoglea in cnidarians and ctenophores; more complex animals have three main cell layers and no intermediate jelly-like layer. Hence ctenophores and … See more Ctenophora comprise a phylum of marine invertebrates, commonly known as comb jellies, that inhabit sea waters worldwide. They are notable for the groups of cilia they use for swimming (commonly referred to as "combs"), and … See more Distribution Ctenophores are found in most marine environments: from polar waters to the tropics; near coasts and in mid-ocean; from the surface … See more Despite their fragile, gelatinous bodies, fossils thought to represent ctenophores – apparently with no tentacles but many more comb-rows than modern forms – have been found in Lagerstätten as far back as the early Cambrian, about 515 million years ago. … See more Among animal phyla, the Ctenophores are more complex than sponges, about as complex as cnidarians (jellyfish, sea anemones, etc.), and less complex than bilaterians (which … See more For a phylum with relatively few species, ctenophores have a wide range of body plans. Coastal species need to be tough enough to … See more The number of known living ctenophore species is uncertain since many of those named and formally described have turned out to be identical … See more • Gelatinous zooplankton See more how to set edge ie compatibility modeWebCtenophores have rows of cilia arrays (comb plates) that are used for locomotion and they are lacking nematocytes (Brusca and Brusca, 2002; Pang and Martindale, 2008). The … note for cartridgehttp://abacus.bates.edu/acad/depts/biobook/Lab9AniA.pdf how to set duplicate formula in google sheetsWebCnidarians have an outer tissue layer, the epidermis, derived from ectoderm, and an inner gastrodermis, derived from endoderm, with jellylike mesoglea in between. Body Wall The … note for calendar washington stateWebAll bilaterians, the animals with bilaterally symmetrical embryos, are triploblastic. Other animal taxa, the ctenophores, placozoans and cnidarians, are diploblastic, meaning their embryos contain only two germ layers. Sponges are even less developmentally specialized, lacking both true tissues [2] and organs. [3] how to set edge open browser previous pagesWebApr 7, 2024 · During embryogenesis, a primary germ layer of a cell called the germinal layer is formed. The three germinal layers are: Ectoderm layer. Mesoderm layer. Endoderm layer. The epidermis is formed by the outer layer of ectoderm, while the internal structures are formed by the inner layer of endoderm. Mesoglea is a non-cellular gel-like … how to set edge languageWebectoderm, the outermost of the three germ layers, or masses of cells, which appears early in the development of an animal embryo. In vertebrates, ectoderm subsequently gives … how to set edge on desktop