00:10
00:09
00:08
00:07
00:06
00:05
00:04
00:03
00:02
00:01
| having a backbone or spinal column |
| warm-blooded vertebrate with feathers, wings, scaly legs and beak which bear young in shelled eggs |
lorica
a tubular, conical, or vaselike structure secreted by some protozoans (e.g., Stentor) and many rotifers. Many species incorporate sand grains and other particles into the lorica for reinforcement. The loose-fitting case, closed at one end, has a large opening at the anterior end through which part of the organism (or its appendages) may be extended. The lorica is of taxonomic importance among protozoologists. See also test
Learn more about lorica with a free trial on Britannica.com.