Question

Explain:
1. Dinoflagellates
2. Euglenoid
3. Protozoans
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Answer 1

Answer:

1. Dinoflagellates are unicellular protista . Many of them are photosynthetic and some members are capable of producing of light through bioluminescence (e.g., Noctiluca and Gonyaulax ).
2. Euglenoids have shape changing motion, called metaboly. They are either unicellular or colonial and can swim or glide with the help of flagella (e.g., Euglena).
3. Protozoa are unicellular and eukaryotic organism. Some are parasitic and many of them are motile (e.g., Paramecium, Amoeba, Giardia etc.)

Answer 2

Dinoflagellates :

The dinoflagellates are single-celled eukaryotes constituting the phylum Dinoflagellata. Usually considered algae, dinoflagellates are mostly marine plankton, but they also are common in freshwater habitats. Their populations are distributed depending on sea surface temperature, salinity, or depth.

Euglenoid :

a flagellated single-celled organism of a group that comprises euglena and its relatives.

Protozoans :

Protozoa (also protozoan, plural protozoans) is an informal term for a group of single-celled eukaryotes, either free-living or parasitic, which feed on organic matter such as other microorganisms or organic tissues and debris.