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DIATOMS (2 frustules (epitheca- larger half, hypotheca- smaller half),…
DIATOMS
2 frustules
epitheca- larger half
hypotheca- smaller half
Asexual reproduction
new within old theca
Sexual reproduction
size diminish to 30% of original size
Diploid vegetative cells
meiosis
gametes formed
fused
zygote formed
developed into auxospore
mitosis
mature
frustules - composed of crystallized silica
Distinctive patterns - identification
Chlorophyll a & b
with carotenoids
unicellular , colonial , filamentous
lack of flagella
single large nucleus