Titlebook: Handbook of the Protists; John M. Archibald,Alastair G.B. Simpson,John O. Co Living reference work 20200th edition Parasitology.Phycology

梯田

Bacillariophyta, damp terrestrial habitats. They are well represented in marine phytoplankton and may account for 20% of global photosynthetic carbon fixation. However, the vast majority of the estimated 100,000 species are benthic, living attached to surfaces or gliding over sediments using a unique organelle, the

Ringworm

obstinate

ARY

悲觀

Chlorarachniophytes, temperate seas. The group is primarily studied due to their evolutionary history. Chlorarachniophytes acquired photosynthesis by secondary endosymbiosis, where an amoeboflagellate host took up a green algal symbiont and retained it. The symbiont is distinguished by having retained a relict nucleus,

collateral

Tortuous

Choanoflagellatea,morphology, present in all species, is an ovoid to round protoplast with one apical flagellum surrounded by a collar of microvilli. Phylogenetic studies indicate that choanoflagellates are the closest known living relatives of animals, which has led to a focus on this group to reconstruct the histor

avulsion

Chrysophyta,s silicified .. They occur mainly as phytoplankton in temperate freshwaters, and their distribution is ecologically determined, mainly by temperature and pH..Cells are naked or in many cases surrounded by an envelope, e.g., of species-specific silica scales manufactured from the chloroplast ER and .

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