Essay on Bio340

4475 Words May 17th, 2016 18 Pages
SimBio Virtual Labs®
EcoBeaker®: The Barnacle Zone
NOTE TO STUDENTS:
This workbook accompanies the SimBio Virtual Labs® The Barnacle Zone laboratory. Only registered subscribers are authorized to use this material. Laboratory subscriptions may not be shared or transferred.
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SimBio Virtual Labs®: EcoBeaker® The Barnacle Zone
Background
When we tell our kids about different species and where they live, we naturally start talking about weather and the physical environment. Camels are adapted to
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In addition to including a range of physical environments, the intertidal zone is home to many different kinds of organisms who spend their time either stuck to the rocks or moving slowly around them. This makes it a great habitat in which to study how organisms interact with one another and whether or not those interactions shape organisms’ distributions.
This lab simulates life on the side of a rock along the rocky intertidal coast of Scotland. Our simulated rock is inhabited by two species of barnacles, small animals that, as adults, have shells that are shaped like little volcanoes. Although they don’t look like it in their adult stages, barnacles are crustaceans, related to crabs and lobsters. As adults, barnacle shells are cemented to a rock or other hard object, so that an adult barnacle can’t move anywhere. When a barnacle is submerged, it opens its shell and uses its feathery legs to filter the water for food particles. When the tide recedes and a barnacle is exposed to the air, it closes its shell tightly to keep itself from drying out. Although the adult barnacle can’t move, it makes larvae that can swim around in the water in search of appropriate places to settle and live out their adult lives. © 2013, SimBio. All Rights Reserved. 1
SimBio Virtual Labs® | The Barnacle Zone
Two common species of barnacle live on the Scottish coast; one is Semibalanus balanoides (formerly

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