ROTIFERS

Externally segmented with semi-flexible, transparent cuticle covering ||
 * =**Phylum**= || Thi Dzu ||
 * **1 Examples** || Bdelloid rotifer ( most common found in freshwater) ||
 * **2 Habitats** || Found in fresh water, some in MN, some in marine ||
 * **3 Mode of feeding, digestive, excretory** || Cilia draw water (containing food) into mouth ||
 * **4 Internal Transport****(circulation & respiration)** || No respiratory and no circulatory system (gas is taken up through the ingester water and the spacious body cavity) ||
 * **5 Symmetry & Support,**===Locomotion, body covering=== || Corona or rotary oragan functions as locomotive and feeding oran
 * **6 Fertilization &Reproduction****(sexual/ asexual)** || Some females produce only females from unfertilized eggs (parthenogenesis) ||
 * **7 Body Forms (life stage forms)** || In most species : unfertilized eggs -> resistant zygotes that can survive in dry conditions -> youngins (free-swimming) ||
 * **8 Defense / senses/ response to environment** || Can respond to unfavorable environmental changes by simply crawling slowly away, rebuilding their canal systems as they go ||
 * **9 Nervous system** || Consists of nerves that extend to the sensory organs and other areas of the body ||
 * **10 Importance (how it fits into****the world)** || Form an important part of freshwater zooplankton and help with the decomposition of soil ||
 * **Misc.** || Smaller than most protists (05-2 mm) but truly multicellular ||