GENERAL HISTOLOGY

OESOPHAGUS STOMACH

ECHINODERMS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When feeding, sea stars are considered ____
A
predators
B
grazers
C
deposit feeders
D
filter feeders
Explanation: 

Detailed explanation-1: -They are opportunistic feeders and are mostly predators on benthic invertebrates. Several species have specialized feeding behaviours including eversion of their stomachs and suspension feeding.

Detailed explanation-2: -Sea stars live in salt water and are found in all of the world’s oceans, from warm, tropical waters to the cold seafloor. Sea stars are mostly carnivorous and prey on mollusks-including clams, mussels and oysters-which they pry open with their suction-cupped feet.

Detailed explanation-3: -Believe it or not, sea stars are predators. They eat mollusks like scallops, clams, and oysters, as well as sea urchins, crustaceans, and fish. A sea star uses its tube legs and strong muscles to pry open mollusk shells just enough for the predator’s stomach to slip inside and dissolve its prey.

Detailed explanation-4: -Sea stars may be predators; scavengers; deposit feeders (ingest mud and extract food particles; or suspension feeders (extract prey and food particles from the water).

Detailed explanation-5: -Feeding: Starfish are mostly predators and feed on invertebrates such as mussels and clams that live on the ocean floor. Several species have specialized feeding behaviors including eversion of their stomachs. This means the starfish extends its stomach out of its mouth and over the digestible parts of its prey.

There is 1 question to complete.