| 41. | Jones once concocted this riddle : " What's the difference between Leon Schlesinger and a planarian worm ?"
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| 42. | They have a single-opening digestive tract; in Tricladida planarians this consists of one anterior branch and two posterior branches.
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| 43. | Although there are over 830 known species of Geoplanidae in the world, the diversity of land planarians is still poorly known.
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| 44. | "Luteostriata abundans " is a small to medium-sized land planarian with an elongate body and parallel margins.
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| 45. | The most frequently used planarian in high school and first-year college laboratories is the brownish " Girardia tigrina ".
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| 46. | In order to prevent starvation a planarian will use their own cells for energy, this phenomenon is known as de-growth.
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| 47. | "' Caenoplanini "'is a tribe of land planarians in the subfamily Rhynchodeminae mostly found throughout the Oceania ecozones.
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| 48. | ""'Luteostriata abundans " "'is a species of Brazilian land planarian in the subfamily Geoplaninae.
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| 49. | ""'Obama anthropophila " "'is a species of Brazilian land planarian in the subfamily Geoplaninae.
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| 50. | ""'Luteostriata graffi " "'is a species of Brazilian land planarian in the subfamily Geoplaninae.
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