Question

Paramecium is a-
a) Protozoan
b) Bacterium
c) Virus
d) Annelid

Answer 1

Paramecium is a ciliated protozoan. These are aquatic organisms that are active in moving because thousands of cilia are present. They have a cavity opening to the surface of the cell. The movement of rows of cilia causes the water laden with food to be steered into the gullet.

Complete answer:
a) Protozoa- Heterotroph’s protozoans live like parasites or predators. They are believed to be primitive relatives of animals. There are four major groups of protozoans. Amoeboid protozoans, Flagellated protozoans, ciliated protozoans, sporozoans etc. so, Paramecium is the example of ciliated protozoans. Protozoan which bears ciliary organs from their body.
So, option a is correct.
B) Bacterium- Bacteria are the only members of the kingdom Monera. They are the most abundant microorganisms. Bacteria occur almost everywhere. It is the most easily found organism on earth. Widely used in various experiments as it has a faster or rapid growth and replication rate. Bacteria are classified on the basis of their morphology. The spherical shape is called coccus, rod shaped- bacilli, spiral- spirillum.
So, option b is not correct.
c) Virus- viruses are acellular organisms with a highly infection rate. They have a capsule which is a protein coated cover which is highly infectious. If the protein cover has spikes on it, we can call it spike protein. Viruses cause the flu, cough, and cold in various animals including human beings. Viruses are non-cellular organisms.
So, option c is not correct.
d) Annelid- annelids are nothing but phylum Annelida in animal kingdom classifications. They are also marine, aquatic freshwater free-living animals. They sometimes posse’s parasitic nature. They have bilateral symmetry.
So, Option d is not correct

Hence, option A is the correct answer.

Note
So, we get to know in which category the Paramecium belongs. Let us discuss other protozoans too. Such as- amoeboid protozoans- these organisms live in freshwater, sea water or moist soil. They move and capture their prey by false feet. Examples are like entamoeba.