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Classification. Respond to the following statements in reference to the five animal phyla listed below.
-Members of this phylum have a brain with a ventral nerve cord,a complete gut,and a circulatory system that is usually closed.
Q2: Sperm cells are indicated by the letter
Q7: flatworms<br>A)two pairs of legs per segment<br>B)Arachnids<br>C)planarians, flukes,
Q14: Imagine you were 'building' a plant. You
Q19: petal<br>A)haploid cell that gives rise to pollen
Q21: Proteins that speed metabolic reactions might have
Q27: The mechanism that causes a vine's tendrils
Q31: This tissue gives rise to primary vascular
Q37: The supercontinent Pangea _.<br>A) existed over 500
Q45: Monocots and eudicots differ in how xylem
Q51: This nutrient is essential to formation of