Free Kingdom Protista MCQs with Answers

• A. Always viewed with a light microscope
• B. 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.

• A. Protista
• B. Monera
• C. Metazoa
• D. Animalia
• E. Bryophyta

Explanation: Kingdom Protista has membrane-bound organelles, as shown in the diagram and a true nucleus. That is why option A is correct

• A. Algae increase the level of dissolved oxygen in the immediate environment
• B. Algin is obtained from red algae and carrageenan from brown algae
• C. Agar­-agar is obtained from Gelidium and Gracilaria
• D. Laminaria and Sargassum are used as food

Explanation: (b) : Alginic acid is obtained from brown algae whereas carrageenan is obtained from red algae.

• A. Chlorella and Spirulina are used as space food
• B. Mannitol is stored food in red algae
• C. Algin and carrageenan are products of algae
• D. Agar­agar is obtained from Gelidium and Gracilaria

Explanation: (b) : Laminarin and mannitol are food reserves of brown algae or Phaeophyceae.

• A. They move by forming specialized cytoplasmic projections called pseudopodia
• B. They have a rigid cell wall
• C. They are multicellular organisms
• D. They are autotrophic

Explanation: This is the correct answer. Amoebas are single-celled organisms that move by extending and retracting temporary, finger-like projections…

• A. Unicellular organisms only
• B. Filamentous organisms only
• C. Huge multicellular organisms only
• D. Simple Acellular organisms
• E. Ranges from unicellular to Filaments to huge multicellular organisms

Explanation: Algae can be unicellular (existing as individual cells), colonial (several to many cells living in a colony), filamentous (several to many…

• A. Amoeba
• B. Radiolarians
• C. Forams
• D. Female Anopheles mosquito

Explanation: The female Anopheles mosquito is the correct answer because it acts as the vector for Plasmodium, the parasite that causes malaria.

• A. Uninucleated
• B. Enucleate
• C. Mononucleated
• D. Multinucleated

Explanation: The plasmodium of slime molds is an amoeboid mass of cytoplasm that is multinucleated, meaning it contains many nuclei within a single…

• A. Exhibit solely animal-like characteristics
• B. Exhibit solely plant-like characteristics
• C. Exhibit both animal and plant-like characteristics
• D. Exhibit characteristics typical of bacteria
• E. Exhibit characteristics typical of viruses

Explanation: Euglena is a protist that uniquely combines traits of both plants and animals.

• A. Animal-like Protist
• B. Bacteria-like Protist
• C. Plant-like Protist
• D. Virus-like Protist
• E. Fungi-like Protist

Explanation: Slime molds are classified as fungi-like protists because they share some characteristics with fungi, such as the production of spores and…

• A. Both locomotory organelles and contractile vacuoles
• B. Locomotory organelles but not contractile vacuoles
• C. Contractile vacuoles but not locomotory organelles
• D. Neither locomotory organelle nor contractile vacuoles
• E. All are incorrect

Explanation: Sporozoans are a group of protists that are adapted to a parasitic lifestyle.

• A. Erythrocytic phase ⟶ Pre-erythrocytic phase ⟶ Gamogony ⟶ Post-erythrocytic phase
• B. Erythrocytic phase ⟶ Gamogony ⟶ Pre-erythrocytic phase ⟶ Post-erythrocytic phase
• C. Pre-erythrocytic phase ⟶ Post-erythrocytic phase ⟶ Gamogony ⟶ Erythrocytic phase
• D. Post-erythrocytic phase ⟶ Pre-erythrocytic phase ⟶ Erythrocytic phase ⟶ Gamogony
• E. Pre-erythrocytic phase ⟶ Erythrocytic phase ⟶ Post-erythrocytic phase ⟶ Gamogony

Explanation: The Plasmodium life cycle in humans starts with the pre-erythrocytic phase, where sporozoites infect liver cells and multiply.

• A. 6 - 8 sperm-like microgametes
• B. 6 - 8 sperm-like macrogametes
• C. 8 - 12 sperm-like microgametes
• D. 5 - 7 sperm-like macrogametes
• E. 12 - 15 sperm-like microgametes

Explanation: During the gametogony stage of the sexual cycle in certain protists, male gametocytes produce several flagellated microgametes, which are…

• A. 50% relative humidity is essential for sporangia production
• B. Sporangia cannot be produced if relative humidity exceeds 70%
• C. Sporangia are typically produced in a fully saturated atmosphere at temperatures between 25°C - 37°C
• D. The optimum temperature for producing sporangia is around 21°C
• E. Sporangia never form in their preferred environmental conditions

Explanation: The correct answer is Option D: 'The optimum temperature for the production of sporangia is 21°C'.

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

Explanation: The correct answer is Ciliata. Balantidium and Opalina are ciliated protozoans, meaning they use cilia for movement and feeding, which is…

• A. 102°F
• B. 104°F
• C. 106°F
• D. 107°F
• E. 106°C

Explanation: Malaria can cause high fevers as part of its symptomatology, especially in severe cases.

• A. Headache
• B. Muscular pains
• C. Constipation
• D. Chills
• E. Flu-like symptoms

Explanation: Constipation is not a typical symptom of malaria. Malaria commonly presents with symptoms that affect the body's temperature regulation…

• A. The plant body is called thallus
• B. Sporophyte is thallus with 26 chromosomes
• C. Gametophyte is thallus with 26 chromosomes
• D. Reproduction is by sexual as well as asexual methods
• E. It is found growing along the sea-coasts between high and low tides.

Explanation: The correct answer is Option D: 'Reproduction is by sexual as well as asexual methods.' This statement is typically true for many algae…

• A. Oral groove
• B. Contractive vacuole
• C. Vesicle
• D. Vacuole

Explanation: Freshwater protozoans or Protoctista pump excess water out of their body with the help of contractile vacuole because they do not have an…

• A. Vinegar
• B. Saliva
• C. Rainwater
• D. All of these options are correct

Explanation: Small creatures were first seen by Antony Leeuwenhoek, he called these creatures animalcules.