How do brittle stars eat? Most Brittle stars are scavengers or detrivores eatingdecaying matter and plankton. Some are predators, pushing their stomach out through their mouth to digest their prey. Basket stars are suspension feeders, using the mucus coating on their arms to trap plankton and ...
How do starfish breathe? Sea stars don't use gills or lungs to breathe. Theyrely 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...
How do jellyfish survive in their habitat? How do amoebas move in water? What do cuttlefish eat? How do sea turtles use ocean currents? To which class of the phylum Mollusca does a squid belong? How does amoeba eat food? How do flatworms move? How does a starfish reproduce? Explain ...
How do species of warblers (birds) living in the same general region minimize their interspecific competition? Using abiotic and biotic examples, give real examples of how studying ecology can explain the extinction of a species. Use at least two different organisms i...
(Neosmilaster georgianus) by raising their shells and fleeing, but tactile cues from a less threatening omnivorous starfish do not elicit this response. It is important for prey to be able to distinguish cues from threats versus non-threats, as responding to every tactile stimulus would waste...
, which in turn assists them in moving more swiftly and easily. While they have the ability to be extremely rapid in the water, they're often motionless in it. Their lack of movement in the water often helps them, however, in that it allows them to remain more inconspicuous to prey....
Prototypes for every animal body plan rapidly emerged, from sea snails to starfish, from insects to crustaceans. Every animal that has lived since then has been a variation on one of the themes that emerged during this time. Science Newsletter Your weekly roundup of the best stories on health...
Control Market Forces for Plant and Animal Resources African elephant and rhino ivory offer an example of depleting animal resources: as these species fall prey to ivory poachers, their tusks and horns grow increasingly rare and, thus, more valuable. Buyers hoard ivory, hoping for higher value in...