what are the four basic characteristics of chordates?
70676
1: Defining characteristics of chordates: In chordates, four common features appear at some point during development: a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail.
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['These organisms are multicellular, eukaryotic and without chlorophyll.', 'The cells possess no cell walls and plastids.', 'Central vacuoles are absent but small vacuoles may occur.', 'Most of them are free moving (except sponges and some coelentrates)', 'Nutrition is primarily ingestive.']
942755
['#1. Cells are the basic unit of life.', '#2. Cells have hereditary data that is passed down to their offspring.', '#3. All cells come from preexisting cells.', '#4. All organisms, both unicellular and multicellular, are made of one or more cells.', '#5. Energy flows through cells.', '#6. All cells have a similar composition.']
544337
Although they do not have a backbone, larval tunicates have four of the identifying characteristics of a Chordate - notochord, dorsal hollow nerve cord, gill slits, and a postanal tail. ... Most tunicates are not free to move around and their body is covered by an exoskeleton called a tunic.
361438
All groups of living organisms share several key characteristics or functions: order, sensitivity or response to stimuli, reproduction, adaptation, growth and development, regulation, homeostasis, and energy processing. When viewed together, these eight characteristics serve to define life.
516452
['Single-Celled. Perhaps the most straightforward characteristic of bacteria is their existence as single-celled organisms. ... ', 'Absent Organelles. ... ', 'Plasma Membrane. ... ', 'Cell Walls. ... ', 'DNA.']
995505
['Seven Characteristics of Living Organisms. Nutrition, excretion, respiration, sensitivity, reproduction, growth, movement.', 'Nutrition. ... ', 'Excretion. ... ', 'Respiration. ... ', 'Sensitivity. ... ', 'Reproduction. ... ', 'Growth. ... ', 'Movement.']
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['The cell is the smallest entity that still retains the characteristics of life.', 'All cells have three basic parts: ... ', 'Eukaryotic cells are defined by their possession of a membrane-bound nucleus.', 'Prokaryotic cells have no defined nucleus; the only representatives are bacteria.']
183087
Adult lancelets retain all five key characteristics of chordates: a notochord, a dorsal hollow nerve cord, pharyngeal slits, an endostyle, and a post-anal tail.
1407895
One of the key characteristics of tetrapods is that they have four limbs or, if they lack four limbs, their ancestors had four limbs.
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['Resemble bony fish and terrestrial vertebrates in having jaws and paired appendages.', 'An electroreceptive system is well developed.', 'Endoskeleton entirely cartilaginous.', 'No swim bladder or lung.']
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['Cartilage Skeleton.', 'Skin covered with dermal denticles.', 'Powerful Jaws.', 'Efficient Liver.', 'Anatomic Tail.', 'Dynamic Fins.', 'Highly Developed Senses.']
1308557
Body Symmetry of Phylum Chordata Although chordates come in many shapes and sizes, they share the four characteristics listed above and they also all have bilateral symmetry. If you divide a chordate in half, you will get two equal pieces that are mirror images of each other.
1058239
Chordates are eucoelomate deuterostomes, and probably share a common ancestor with echinoderms. Three important characteristics unite the Phylum Chordata. At some point in their life cycle, all chordates have a notochord, a dorsal hollow nerve cord, and pharyngeal gill slits.
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['They have a star-like appearance and are spherical or elongated.', 'They are exclusively marine animals.', 'The organisms are spiny-skinned.', 'They exhibit organ level of organization.', 'They are triploblastic and have a coelomic cavity.', 'The skeleton is made up of calcium carbonate.']
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['They are eukaryotic, which means they have a nucleus.', 'Most have mitochondria.', 'They can be parasites.', 'They all prefer aquatic or moist environments.']
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Some defining characteristics of the phylum are that flatworms are acoelomate (they have no body cavity), triploblastic (the body has three tissue layers), and bilaterally symmetric (they have symmetric right and left sides and usually a definite head), and they have organ systems, including an excretory, digestive, ...