| 41. | Invertebrate is a blanket term that includes all animals apart from the vertebrate members of the chordate phylum.
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| 42. | A hollow nerve cord is found in all chordates, including tunicates ( in the larval stage ).
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| 43. | Within chordate embryos, there is an evolutionary trend exhibited in the mechanisms used to internalize presumptive mesoderm.
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| 44. | Though they are considered deuterostomes, the dorsoventral axis of hemichordates retains features of both protostomes and chordates.
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| 45. | One of the characteristics linking the specimen to chordates is its notochord, the precursor of a spinal column.
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| 46. | The primitive chordates may have been more lucky than fit, dodging the random swings of the grim reaper.
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| 47. | "bushy sequence " and " the gravamen of your argument is the chordate ."
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| 48. | The vertebrates are the only chordate group to exhibit cephalisation, the concentration of brain functions in the head.
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| 49. | Segmentation in chordates is characterized as the formation of a pair of somites on either side of the midline.
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| 50. | The chordates are metamerically segmented animals while Balanoglossus retains in adult stage, the trisegmental character of their larvae.
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