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A filter-feeding echinoderm with feathery arms is typically referred to as a "crinoid," commonly known as a sea lily or feather star. Crinoids have a cup-shaped body and long, feathery arms that they use to capture plankton and small organic particles from the water. They inhabit various marine environments, often attaching to substrates or floating freely. Their unique feeding mechanism allows them to thrive in diverse oceanic conditions.
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What is diffrerence between asteroidea and crinoidea?
Asteroidea, commonly known as sea stars or starfish, are echinoderms characterized by their star-like shape, typically having five or more arms radiating from a central disc. Crinoidea, or crinoids, include sea lilies and feather stars, which have a cup-shaped body and long, feathery arms used for filter feeding. While both belong to the echinoderm phylum, Asteroidea are primarily predators, while Crinoidea mainly feed on plankton and detritus. Additionally, crinoids are mostly sessile, attached to the substrate, whereas sea stars are generally mobile.
What kind of echinoderm may have hundreds of arms?
sea lilies and feather stars
What main body parts does feather stars have?
Feather stars, also known as crinoids, primarily have a central body called the calyx, which houses their internal organs. From the calyx, they extend numerous arms that are feathery in appearance and are used for feeding and locomotion. These arms are covered with pinnules, which help filter food from the water. Additionally, feather stars have a stalk in some species, which anchors them to the substrate, although many are free-swimming.
What does echinoderm mean in Greek?
Echinoderm is from the Greek word εχινόδερμα(echinoderma), meaning "five arms".
What is definition of starfish?
A marine echinoderm with five or more radiating arms. The undersides of the arms bear tube feet for locomotion and, in predatory species, for opening the shells of mollusks.
A vertebrates animals that has tube feet spines and arms that extend out from the body?
No, vertebrates are animals that have spinal columns. You are describing an echinoderm, which is an invertebrate.
What Echinoderm long slender arms and flexible joints?
Sea Star Actually i don't know that's why i was asking so look it up
How can I help my baby stop flailing their arms and legs while bottle feeding?
To help your baby stop flailing their arms and legs while bottle feeding, try swaddling them snugly in a blanket, holding them close to your body, and feeding them in a calm and quiet environment. This can help them feel secure and focused on feeding, reducing the urge to move their arms and legs.
What is a crinoid?
Crinoids, are marine animals that while motile, are bottom dwelling creatures with many feathery arms and a calcareous makeup. They are related to starfish, sea slugs and sea urchins.More detail is available in the related link below.
Do cuttle fish have eight arms?
they have 8 arms and 2 feeding tentacles that pulls food to the beak.
What type of echinoderm has flexible arms that are easily broken to escape predators?
The brittle star has very flexible arms that can brake of in situations involving a predator. The broken arms will continue to wiggle and move to distract said preditor, allowing the brittle star itself to escape.
What is the outer covering like for a echinoderm?
The skeleton is on the outside of a sea star they on the type of echinoderm. In Sea Stars and brittle stars the skeleton is small ossicles that move together creating flexible joints.
