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in Biology by (65.2k points)
Auxospores and hormocysts are formed respectively

(a) several diatoms and a few cyanobacteria

(b) several cyanobacteria and several diatoms

(c) some diatoms and several cyanobacteria

(d) some cyanobacteria and many diatoms

1 Answer

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Best answer

Correct option (a) several diatoms and a few cyanobacteria 

Explanation:

Auxospores and hormocysts are formed by several diatoms and a few cyanobacteria respectively. Bacillariophyceae members (diatoms) are microscopic, eukaryotic, unicellular or colonial coccoid algae. These algae are sexually reproduced by the formation of auxospores in most cases. Bozi (1914) and Fermi (1930) reported that short sections of living cells at the tips of the trichomes of Wertiella Janosa become invested by a thick, lamellated, pigmented sheath. Such multicellular spore-like structures functions as perennating bodies. They are specially modified hormones and are called homosporous or hormocysts.

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