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Mesodermal cells,known as ___________ cells,fill the space between muscles and visceral organs in flatworms.
Q3: The urochordates are<br>A)called tunicates.<br>B)marine animals.<br>C)sessile as adults,but
Q4: With over one billion people,but less land
Q7: Sipunculids<br>A)are marine dwellers.<br>B)live in burrows.<br>C)have a trochophore
Q11: The following characteristics are typical of annelids:<br>A)segmentation,open
Q13: Stratified squamous epithelium consists of two or
Q14: Spiders<br>A)feed on plant juices.<br>B)have six legs.<br>C)have chelicerae
Q29: Reproduction in sponges can be<br>A)asexual by budding.<br>B)asexual
Q31: One of the principal functions of the
Q33: Walmart has an impact on workers, even
Q55: Suppose you hear an investor say "I