| 1. | Cytomeres are caused by complex invaginations of the surface of the schizont.
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| 2. | They form a cradle for the formation of phagophore by membrane invagination.
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| 3. | Invagination is when a tissue folds back on itself.
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| 4. | Each tracheal tube develops as an invagination of the ectoderm during embryonic development.
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| 5. | Each lung is divided into lobes by the invaginations of the pleura as fissures.
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| 6. | The photosynthetic apparatus is housed in these invaginations.
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| 7. | Numerous intestinal glands as pocket-like invaginations are present in the underlying tissue.
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| 8. | They are invaginations of the outer body wall.
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| 9. | The final 18 hours involve continuing this apically convex invagination to form the optic cup.
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| 10. | These invaginations are also known as chromatophores.
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