Evoluultionary tree with inverbrates and vebrates
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Starting from radial organism , organism starts to possess bilateral symmetry (symmetrical to the right and left). This is where vertebrates and invertebrates evolve from. ... Vertebrate tend to use bone, cartilage and dentine as exoskeleton material.
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Root nodules are found on the roots of plants, primarily legumes, that form a symbiosis with nitrogen-fixing bacteria. Under nitrogen-limiting conditions, capable plants form a symbiotic relationship with a host-specific strain of bacteria known as rhizobia.
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