which one of the following organism has changing shapes?
Amoeba
Option a is correct
Explanation for incorrect options
Option b
Euglena is a single-celled flagellate eukaryote genus. It is the most well-known and studied member of the Euglenoidea class. Euglena species can be found in both fresh and salt water.
Option c
Paramecium is a genus of eukaryotic, unicellular ciliates that is frequently studied as a ciliate representative. Paramecia can be found in a variety of freshwater, brackish, and marine settings, and they can be found in large numbers in stagnant basins and ponds.
Option d
Acetabularia is a green algae genus belonging to the Polyphysaceae family. Acetabularia is a single-celled organism that is typically found in subtropical waters. It is enormous in size and structure, making it a great model organism for studying cell biology.