WebWhich of the following are characteristics of ctenophores? They secrete a sticky substance for prey capture. They move by coordinated beating of cilia. They are commonly referred to as sponges. Many species are bioluminescent. Most species live in soil habitats. They possess stinging cnidocytes for prey capture.
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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 … 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
WebTwo germ layers, ectoderm and endoderm In flame cells, The heat is intense Flagella drive fluid through tubules Digestion of proteins takes place Excretion of proteins is one important function Flagella drive fluid through tubules Humans become infected with lung flukes by Eating infected crabs or crayfish Eating infected fish A germ layer is a primary layer of cells that forms during embryonic development. The three germ layers in vertebrates are particularly pronounced; however, all eumetazoans (animals that are sister taxa to the sponges) produce two or three primary germ layers. Some animals, like cnidarians, produce two germ layers (the ectoderm and endoderm) making them diploblastic. Other animals such as bilaterians produce a third layer (the mesoderm) between these two layers, making them
Webb, c, d Anatomical features associated with animals belonging to the Radiata include a) two germ layers b) circular or tubular shape with mouth parts at one end c) sensory … WebAll 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]
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.
WebCtenophores synonyms, Ctenophores pronunciation, Ctenophores translation, English dictionary definition of Ctenophores. Noun 1. Ctenophora - comb jellies; sea acorns; a … fizzling fun house youtubeWeba. 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. fizzle\u0027s claw wow classicWebNov 8, 2010 · Ctenophores as marine invaders capable of wrecking foreign ecosystems ( ! ) In general, ctenophores are recognized to be planktonic carnivores, but have been treated as unusual and perhaps unimportant … cannot access a closed file httppostedfileWebApr 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 … cannot accept incoming connection for peerWebCtenophors. Ctenophora. Germ Layer-Two; Symmetry-Radial; Body Plan-Sac; Coelom- Acoelomate; Segmentation-None. S ea walnut and comb jellies; about 90 species; small, … fizzling and islesWebJul 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. cannot accept track changes in word documentWebCtenophores 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 … cannot access a before initialization