Assertion: sea urchin's shell | /r/Synonym | test
Facets:
Source sentences:
text: Sea urchins have a shell called a test, which comes in colors as varied as black, green, brown, purple and red.
text: The rigid "shell" (test) is a variegated deep red and gray in color, though in rare cases it may be greenish to light purple.
text: Foraminifera and coccolithophores create shells known as "tests" which are made of calcium carbonate.
text: These spines grow on a hard shell called the "test", which encloses the animal.
text: A sea urchin’s shell is called a test or a shell.
text: Instead, it has a tough shell called a test.
text: The shells of sea urchins are called "tests", and the moulted shells of crabs and lobsters are exuviae.
text: The rigid "shell" (test) has five interambulacral segments separated from each other by five ambulacral segments, each of them are composed of smaller regularly interlocking plates.
text: The egg-like “shell” is actually an internal skeleton, or test, made of fused plates of calcite (calcium carbonate).Â Living specimens are light brown or green, covered with thousands of short, delicate spines that form a dense, almost fur-like, covering over the test.
text: Their skin is hard and made of chitinous shell known as ‘test’.
text: The hard shell that covers sea urchins is called the test, and it is composed of a number of overlapping bony plates made of calcium carbonate.