Plant KingdomHard
Question
Auxospores and hormocysts are formed respectively by
Options
A.several diatoms and a few cyanobacteria
B.several cyanobacteria and several diatoms
C.some diatoms and seveal cyanobacteria
D.some cyanobacteria and many diatoms
Solution
Bacillariophyceae members (Diatoms) Form about 20% of all primary production. These are microscopic, eukaryotic, unicellular of colonial coccoid algar. These algae are sexually Repro duced by the formation of auxospores in most cases. Bozi (1914) and Fremi (1930) reported that dhort sections of living cells at the tips of the trichomes of Wertiella lanosa become invested by a thick, lamellated, pigmented sheath, Such multicellular spore like strutures function as perennating bodies. They are specially modified hormogones and are called hormospores or hormocysts. Desikchary (1948) calls the pseudohormogonia.
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