Question

the phenomenon of red tides of the sea is caused by

A) Gonyaulax
B) Chlamydomonas
C) Euglena
D) Paramecium​

Answer 1

Answer:

The phenomenon of red tide is caused by Gonyaulax.

correct option A.

Explanation:

1.Dinoflagellates are what causes red tides. 

2.When a few species of dinoflagellates generate an algal bloom (high concentrations of aquatic microorganisms), the bloom turns red or brown. 

3.Red tides occur when algae from the estuary, sea, or freshwater collect rapidly in the water column, causing the surface water to turn a bright red colour. 

4.It's most common along the seaside.