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The most distinctive feature of echinoderms is the [1]
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11.12: Echinoderms [2]
Crinoids are essentially a mouth on the top surface that is surrounded by feeding arms. Although the basic echinoderm pattern of fivefold symmetry can be recognized, most crinoids have many more than five arms
Echinoderms are marine organisms that make up the phylum Echinodermata. They can be found in the ocean from the equator to the poles
They are among the most distinctive organisms within the animal kingdom. Members of the phylum include sea stars (starfish), sand dollars, and feather stars, shown in Figure below.
Echinoderm [3]
|Extant and extinct echinoderms of six classes: Fromia indica (Asteroidea); Ophiocoma scolopendrina (Ophiuroidea); Stomopneustes variolaris (Echinoidea); Oxycomanthus bennetti (Crinoidea); Actinopyga echinites (Holothuroidea); Ctenocystoidea.|. An echinoderm (/ɪˈkaɪnəˌdɜːrm, ˈɛkə-/)[2] is any member of the phylum Echinodermata (/ɪˌkaɪnoʊˈdɜːrmətə/)
The phylum contains about 7,000 living species, making it the second-largest grouping of deuterostomes, after the chordates. The first definitive echinoderms appeared near the start of the Cambrian.
Ecologically, there are few other groupings so abundant in the biotic desert of the deep sea, as well as shallower oceans. Most echinoderms are able to reproduce asexually and regenerate tissue, organs, and limbs; in some cases, they can undergo complete regeneration from a single limb
Which of the following characteristic feature is unique to phylum Echinodermata? [4]
The organisms of phylum Echinodermata consists of spiny skinned organisms. In Greek, Echinos means hedgehog and derma means skin
All the other above mentioned features like true coelom, triploblastic and marine habitat are also seen in phylum Echinodermata but they are not unique to the phylum.
Unique Characteristics [5]
All echinoderms share several common characteristics despite very dissimilar outward appearances differentiating them from all other members of the animal kingdom. First, they all possess five-part radial symmetry around a central disk
These unique characteristics distinguish echinoderms from other animals in the animal kingdom.. This is the most obvious common trait shared by members of this phylum
This is especially apparent in starfish, brittle stars and serpent starfish where the five arms or a multiple thereof are arranged around a central disk. This radial symmetry is not as apparent in sea urchins or sea cucumbers, but when these animals are closely examined or dissected, it becomes readily apparent that their body is arranged based on this 5-part symmetry
[Solved] Distinctive Features of Echinodermata for the basis of class [6]
Distinctive Features of Echinodermata for the basis of classification is:. – Echinodermata have an endoskeleton of calcareous ossicles, so these are named as Echinodermata
The most distinctive feature of echinoderms is the presence of water vascular system which helps in locomotion, capture and transport of food and respiration.. – Echinoderms have the distinctive feature of the presence of water vascular system which serves the following purpose:
The notochord, dorsal hollow nerve cord, gill slits with limbs or fins. The HTET Additional Results released were announced 29th December 2022 on the official website
Which is the characteristic feature of Echinoderms?A. Vascular systemB. Radial symmetry C. Radial canalD. Ambulacral systemE. All of the above [7]
Which is the characteristic feature of Echinoderms?. Starfish, sea Urchins, sea cucumbers are few examples of echinoderms
Echinoderms are exclusively marine species with over 6000 species present in the sea. Few important characteristic feature of echinoderms are-
The echinoderms have a distinct ambulacral system which helps the organisms in feeding (capturing food). This system starts from the mouth and ends at each arm
manoa.hawaii.edu/ExploringOurFluidEarth [8]
Image courtesy of National Oceanic and Atmospheric Administration (NOAA) Photo Library. Image courtesy of National Oceanic and Atmospheric Administration (NOAA) Photo Library
Image courtesy of National Oceanic and Atmospheric Administration (NOAA) Photo Library. Echinoderms are named for the spines or bumps covering the outer surface of the bodies of many of them (Greek root word echino- meaning spiny; Latin root word -derm meaning skin)
Although they may appear very different, echinoderms all have two major defining characteristics that set them apart from all other animals: a water vascular system and five-sided radial symmetry.. The water vascular system is a complex series of canals running through an echinoderm’s body (Fig
Biology for Majors II [9]
– Describe the distinguishing characteristics of echinoderms. – Identify the different classes in phylum Echinodermata
Sea stars (Figure 1), sea cucumbers, sea urchins, sand dollars, and brittle stars are all examples of echinoderms. To date, no freshwater or terrestrial echinoderms are known.
The endoskeleton is developed by epidermal cells and may possess pigment cells, giving vivid colors to these animals, as well as cells laden with toxins. In echinoderms like sea stars, every arm bears two rows of tube feet on the oral side
15.5: Echinoderms and Chordates [10]
Deuterostomes include the phyla Echinodermata and Chordata (which includes the vertebrates) and two smaller phyla. Deuterostomes share similar patterns of early development.
The phylum includes about 7,0001 described living species, such as sea stars, sea cucumbers, sea urchins, sand dollars, and brittle stars. Adult echinoderms exhibit pentaradial symmetry and have a calcareous endoskeleton made of ossicles (Figure \(\PageIndex{1}\)), although the early larval stages of all echinoderms have bilateral symmetry
These animals have a true coelom, a portion of which is modified into a unique circulatory system called a water vascular system. An interesting feature of these animals is their power to regenerate, even when over 75 percent of their body mass is lost.
The distinctive features of the Echinoderms are 1. Spines on body 2. Radial symmetry 3. Water vascular System 4. Both 2 and 3 NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions [11]
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(1)It is composed of a central ring canal from which radial canals extend. (2)Tube like appendages called tube feet is present
(5) Water enters the Water Vascular System through a madreporite.. (6) When the muscles in the tube feet contract the tube foot bends and pull the animal forward.
Multiple Choice Quiz [12]
Raven, Missouri Botanical Gardens & Washington University. An evolutionary advance that first appeared in echinoderms was
Breaking in half and regenerating the other half is actually a reproductive mechanism of some members of the class. The protostome embryos have a _______________ form of cleavage.
ingesting plankton into their water vascular system. The “spiny skin” for which echinoderms are named refers to the
SOLVED: Which of the following is a distinctive feature of all echinoderms? Group of answer choices Gill slits Bilateral symmetry Water vascular system Jointed legs [13]
Get 5 free video unlocks on our app with code GOMOBILE. Which of the following is a distinctive feature of all echinoderms?
Which of the following is not a shared derived character of echinoderms? (a) water vascular system (b) notochord (c) tube feet(d) pentaradial symmetry in adult (e) endoskeleton of calcium carbonate plates and spines. Which of the following is not a shared derived character of echinoderms? (a) water vascular system (b) notochord(c) tube feet (d) pentaradial symmetry in adult (e) endoskeleton of calcium carbonate plates and soines
is bilateral in organization, even though the adult animal is not bilaterally symmetrical.d. moves water through the animal’s body during filter feeding.
Which of the following are three common characteristics of echinoderms? a. tube feet, circulatory system, body symmetry b. marine-dwellers, endoskeletons, water-vascular system c. bilateral symmetry, [14]
Which of the following are three common characteristics of echinoderms? a. Which of the following are three common characteristics of echinoderms?
Echinoderms are species found in the phylum Echinodermata and include species of starfish, sea urchins, and sea cucumbers. The most notable characteristic of echinoderms is their radial symmetry, with several arms (usually 5 or more) radiating from a central body
Structures known as tube-feet have suction pads on them that allow the echinoderms to anchor to a surface, and these tube feet are controlled by a water-vascular system to create the suction effect.. Become a Study.com member to unlock this answer! Create your accountView this answer
Echinoderm [15]
|Extant and extinct echinoderms of six classes: Fromia indica (Asteroidea); Ophiocoma scolopendrina (Ophiuroidea); Stomopneustes variolaris (Echinoidea); Oxycomanthus bennetti (Crinoidea); Actinopyga echinites (Holothuroidea); Ctenocystoidea.|. An echinoderm (/ɪˈkaɪnəˌdɜːrm, ˈɛkə-/)[2] is any member of the phylum Echinodermata (/ɪˌkaɪnoʊˈdɜːrmətə/)
The phylum contains about 7,000 living species, making it the second-largest grouping of deuterostomes, after the chordates. The first definitive echinoderms appeared near the start of the Cambrian.
Ecologically, there are few other groupings so abundant in the biotic desert of the deep sea, as well as shallower oceans. Most echinoderms are able to reproduce asexually and regenerate tissue, organs, and limbs; in some cases, they can undergo complete regeneration from a single limb
Sources
- https://www.doubtnut.com/question-answer-biology/the-most-distinctive-feature-of-echinoderms-is-the-26855315#:~:text=Answer%20is%3AC-,the%20most%20distinctive%20feature%20of%20echinoderms,presence%20of%20water%20vascular%20system.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Introductory_Biology_(CK-12)/11%3A_Invertebrates/11.12%3A_Echinoderms#:~:text=A%20unique%20feature%20of%20echinoderms,feet%20(see%20Figure%20below).
- https://en.wikipedia.org/wiki/Echinoderm#:~:text=The%20water%20vascular%20system,-Main%20article%3A%20Water&text=Echinoderms%20possess%20a%20unique%20water,feeding%2C%20sensory%20reception%20and%20locomotion.
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- https://highered.mheducation.com/sites/0073031208/student_view0/chapter47/multiple_choice.html
- https://www.numerade.com/ask/question/which-of-the-following-is-a-distinctive-feature-of-all-echinodermsasap-group-of-answer-choices-gill-slits-bilateral-symmetry-water-vascular-system-jointed-legs-41273/
- https://homework.study.com/explanation/which-of-the-following-are-three-common-characteristics-of-echinoderms-a-tube-feet-circulatory-system-body-symmetry-b-marine-dwellers-endoskeletons-water-vascular-system-c-bilateral-symmetry.html
- https://en.wikipedia.org/wiki/Echinoderm
