In examining zooplankton during an expedition to the Marshall Islands, you discover a new invertebrate species. This tiny creature has a lophophore, a crown of ciliated tentacles that helps it feed. This organism probably _____. has a spiral cleavage pattern during early developmentlacks mesodermal tissuehas a blastopore during development that ultimately becomes an anusis a chromalveolate protistpossesses cnidocytes on its tentaclesBeing sessile filter feeders, sponges have an asymmetric body plan characterized by numerous pores for water to enter. These pores are _____.regulated by Hoxgenes during developmentcalled ‘blastopores’, and are a crucial step in developmentcreated by cells termed ‘choanocytes’, cells that resemble the common ancestor of all animalslined with endodermal cellstermed ‘oscula’, from the Latin for ‘mouth’The extremely successful arthropod body plan is characterized by heterogeneous specialized segments;
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