| 21. | Algae constitute a polyphyletic group they were acquired in different ways.
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| 22. | Most algae contain chloroplasts that are similar in structure to cyanobacteria.
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| 23. | The various sorts of algae play significant roles in aquatic ecology.
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| 24. | The solution would be blending algae fuels with existing jet fuel:
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| 25. | The chloroplasts of some hornworts and algae contain structures called pyrenoids.
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| 26. | Some algae may store food in the form of oil droplets.
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| 27. | The green algae were similar to today's sea moss.
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| 28. | A number of microscopic algae also occur as symbionts in lichens.
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| 29. | The radula is used to scrape microscopic algae off the substratum.
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| 30. | The fucoxanthin in this algae induces apoptosis of various cancer cells.
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