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Tube feet
Which of the following has tube feet as the Locomotory organ?
Complete answer:
Starfish
contains tube feet as its locomotory organ. They perform locomotion by contracting muscles and the force generated by water into the tube feet by which they can extend and push themselves against the ground. After this, the feet are relaxed and allow them to retract.
What is the respiratory organ of starfish?
Gills
is the respiratory organ of starfish pedicellariae.
Are starfishes poisonous?
Are starfish poisonous? … The answer is no,
starfish are not poisonous at all
and their spikes can’t hurt you unless it pierces your skin – or if the spike has a venomous substance on them which only happens in some species of sea stars like urchins.
What is the locomotion of starfish?
The means of locomotion for a starfish is
through their tube feet
. … When water enters the canals inside the body of a starfish, it eventually reaches these feet. A series of contraction and relaxation procedures take place, which displaces the animal from one place to another.
Can a starfish see?
Scientists Find That
Starfish Eyes Actually See
, at Least a Little. After decades of wondering what starfish use their eyes for, scientists see some light. Starfish have eyes—one on the end of each of their arms—but what they do with them was anyone’s guess. …
What is the Locomotory organ of Hydra?
Hydra can secrete a bubble of gas by the ectodermal cells of the basal disc. By the hydrostatic action of the gas bubble, it can float on the surface of the water and is passively carried by water current or wind below. So, the correct answer is ‘
tentacles and basal disc
‘.
What is the Locomotory organ of annelida?
Setae and parapodia
are locomotory structures in annelids. Except leeches, unjointed chitinous setae are often present.
What is the Locomotory organ of whale?
Swimming mammals, such as whales, dolphins, and seals, use their
flippers
to move forward through the water column.
Do starfish have lungs?
Sea stars don’t use gills or lungs to breathe
. They rely on diffusion across surfaces in their body. For example, most oxygen is taken up from water that passes over their tube feet and papulae or skin gills. Skin gills are small projections near the base of the spines, usually on the topside.
Does a starfish have a heart?
03They also
don’t have blood and a heart
. 04Instead of blood, they have a water vascular system. That system pumps seawater through the tube feet and throughout the starfish’s body. 05Starfish use filtered seawater to pump nutrients through their nervous system.
Do starfish have bones?
Although starfish are invertebrates,
they do have a kind of skeleton
. The bodies of starfish are composed of calcium carbonate plates, known as ‘ossicles’. These form the endoskeleton, which takes on a variety of forms such as spines and granules. … Most sea stars are predators.
Can starfish feel pain?
Katie Campbell: Starfish lack a centralized brain, but they do have a complex nervous system and
they can feel pain
.
Can humans eat starfish?
Yes, you can eat a Starfish
, and many times in China’s food markets, you will find them being served on a stick. Not too many people eat them because to some, their taste is not appealing. It has been said that they taste like a Sea Urchin but a bit more bitter and creamier. Some say they taste like ocean water.
What is the biggest starfish in the world?
The largest known starfish,
the sunflower star (Pycnopodia helianthoides)
, manages to break several records. It is the largest sea star in terms of arm span, reaching nearly 40 inches from arm tip to arm tip, and is also the heaviest, weighing in at up to 11 pounds.
Can starfish glow?
Starfish that live very deep in the sea are sometimes bioluminescent. However,
most starfish don’t glow
. The starfish you see on the beach or in shallow water don’t give off light like stars do. … Starfish have five radial arms centered around a central disk, giving them their unique star-like shape.
