Free Kingdom Protista MCQs with Answers

91. All of the following are different types of protozoa except

• A. Actinopods
• B. Dinoflagellates
• C. Zooflagellates
• D. Ciliates

Explanation: Dinoflagellates are autotrophic/algal protists, not protozoa.

92. Which is not true for giant amoeba?

• A. Most primitive of all eukaryote-like forms
• B. Obtains energy from methanogenic bacteria
• C. Contains all eukaryotic organelles
• D. Contribute to degradation of organic molecule

Explanation: Giant amoeba is a primitive eukaryote that contains all eukaryotic organelles and helps in the degradation of organic matter. It does not obtain energy from methanogenic bacteria, so this statement is not true for giant amoeba.

93. Biologists divide photosynthetic protists based on various aspects. Which one of these pairs, when classified based on pigments, is mismatched?

• A. Pheophyta
• B. Rhodophyta
• C. Euglenophyta
• D. Chlorophyta

Explanation: The mismatched pair is Euglenophyta, because euglenoids are mainly classified based on storage products and body form, not pigments. Pheophyta (brown algae), Rhodophyta (red algae), and Chlorophyta (green algae) are correctly classified by their pigments. Thus, Euglenophyta does not fit when grouping photosynthetic protists by pigments.

94. Brown algae, like kelps, are the giants of the kingdom Protista. What do they not possess?

• A. Blades
• B. Stipes
• C. Anchoring holdfast
• D. Rhizopus

Explanation: Rhizopus is a fungus, not a structure found in brown algae.

95. It is the smallest eukaryote:

• A. Virus
• B. Bacteria
• C. Plasmodium
• D. Sponge

Explanation: Plasmodium belongs to the kingdom Protozoa which are Eukaryotes and are microscopic. Viruses' classification to even living things is in debate. Bacteria are prokaryotes. Sponges are found underwater and are visible by the naked eye.

96. Which of the following is found in all viruses?

• A. Protein coat
• B. Cell membrane
• C. Membrane-bound organelles
• D. Endoplasmic reticulum
• E. Mitochondrial DNA

Explanation: All viruses possess a protein coat, also known as a capsid, which encloses their genetic material. The protein coat provides protection to the viral genome and helps in the attachment of the virus to host cells. The composition and structure of the protein coat can vary among different viruses.

97. Viruses are:

• A. Always viewed with a light microscope
• B. Are an enzyme-nucleus mixture
• C. Obligate, intracellular parasites
• D. Cellular
• E. Host independent

Explanation: Viruses are obligate, intracellular parasites, which means they require a host cell to reproduce and carry out their life cycle. They cannot replicate or metabolize independently outside of a host cell. Viruses are composed of genetic material (DNA or RNA) enclosed in a protein coat called capsid.

98. Which of the following groups of organisms lacks motility?

• A. Cellular slime molds
• B. Ciliates
• C. Dinoflagellates
• D. Euglenoids
• E. Apicomplexans

Explanation: Apicomplexans have no means of motility. They are parasites that are transferred among hosts by the activities of the hosts.

99. Trypanosoma belongs to the class:

• A. Sarcodina
• B. Flagellata
• C. Ciliata
• D. Suctoria
• E. Sporozoa

Explanation: The flagellates are generally considered to be the basic stock from which evolved not only other kinds of protozoa but also higher plants and animals e.g. Trypanosoma.

100. All of the following organisms belong to the kingdom Protista EXCEPT:

• A. Ulva
• B. Euglena
• C. Slime Mold
• D. Common Mold
• E. Suctoria

Explanation: Common Molds belong to the Kingdom Fungi.