| 11. | The body is colourless, but the cerata are coloured due to the digestive glands inside them.
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| 12. | The sediment-filled guts and the digestive glands of some specimens are preserved, indicating a predatory habit.
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| 13. | This species contains zooxanthellae of the genus " Symbiodinium " in the digestive gland ( hepatopancreas ).
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| 14. | The digestive gland is greenish or brownish.
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| 15. | Within the cerata, the branches of the digestive gland are visible due to the cerata being transparent.
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| 16. | Finally, " N . angasanensis " exhibits a greater density of digestive glands on the inner pitcher surface.
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| 17. | The central digestive gland lobe is thin and brown in colour and can be seen through each ceras.
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| 18. | Each known species has a visible digestive gland, which serves a similar purpose as a stomach and liver.
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| 19. | Digestive glands are found in this region of the gut, producing enzymes that start to break down the food.
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| 20. | The majority of species have developmental stages undergo merogony, gamogony and sporogony within the digestive gland of gastropod host.
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