| Some conduct sexual reproduction, which is oogamous or isogamous | |
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| ISBN 0 521 30419 9• "Green algae and the origin of land plants" | Some are symbiotic relationships between fungi and green algae |
, or Chlamydomonas nivalis, of the class Chlorophyceae, lives on summer alpine snowfields.
| Seaweeds of the British Isles | While most species live in and a large number in , other species are adapted to a wide range of environments |
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| Members of the Chlorophyta also form symbiotic relationships with , sponges and cnidarians | All are flagellated and these have an advantage of motility |