OESOPHAGUS STOMACH
ECHINODERMS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
on the ocean bottom.
|
|
|
in the deep ocean.
|
|
|
near the surface in the ocean.
|
|
|
None of the above
|
Detailed explanation-1: -Most echinoderms have a complete digestive system and a large coelom. They have separate sexes, usually with gonads in sets of five, showing internal pentaradial symmetry. All echinoderm species live in the ocean; there are no freshwater or terrestrial echinoderms.
Detailed explanation-2: -Echinoderms live in marine environments that range from the shallow estuarine to the deep sea in tropical to polar latitudes and often play integral roles within the marine ecosystem. As adults, echinoderms are predominantly benthic animals although a few species can swim.
Detailed explanation-3: -Echinoderms can be found in oceans around the world. They usually live along the seashore or in reefs, but can also live in deep water from the intertidal zone to the abyssal zone.