Haptophyte
Haptophytes are a phylum of algae, sometimes called the Prymnesiophyta.[1] All or most of them are single-celled photosynthetic phytoplankton.
| Haptophytes | |
|---|---|
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| Coccolithophore (Coccolithus pelagicus) | |
| Scientific classification | |
| Domain: | |
| Kingdom: | |
| Phylum: | Haptophyta Hibberd 1976
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| Orders | |
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Class Pavlovophyceae | |
The cells typically have two slightly unequal flagella and a unique organelle called a haptonema. This is superficially similar to a flagellum, but differs in its arrangement of microtubules, and in its use. The name comes from the Greek hapsis = touch, and nema = thread.
Classification
Molecular and morphological evidence places them in five orders; coccolithophores make up the Isochrysidales and Coccolithales. Other groups include phytoplankton which produce the toxic algal blooms.
Haptophyte Media
Cell scheme. 1-haptonema, 2-flagella, 3-mitochondrion, 4-Golgi apparatus, 5-nucleus, 6-scales, 7-chrysolaminarin vacuole, 8-plastid, 9-ribosomes, 10-stigma, 11-endoplasmic reticulum, 12-chloroplast endoplasmic reticulum, 13-pyrenoid, 14-thylakoids.
