Find the groove that extends down the underside of each arm. This is called the ambulacral groove. Label this on figure 2. Feel the numerous, soft tube feet inside each groove. these are part of the water vascular system & aid in movement and feeding.btain a preserved starfish and rinse off any preservative with water. Place the starfish in the dissecting pan with its dorsal or aboral (top) surface upward. Observe the starfish and determine its symmetry. Locate the central disc in the center of the starfish.
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The Canada lynx (Lynx canadensis), or Canadian lynx, is a North American felid that ranges in forest and tundra regions across Canada and into Alaska, as well as some parts of the northern United States. Historically, the Canadian lynx ranged from Alaska across Canada and into many of the northern U.S. states.