Kingdom Protista — NEET Biology MCQs with Solutions
Free NEET Biology Kingdom Protista MCQs with step-by-step solutions (9 questions). Part of Biological Classification. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Kingdom Protista · easy · theory
All members of Kingdom Protista are:
A. Autotrophic
B. Eukaryotic ✓ Correct
C. Prokaryotic
D. Multicellular
Solution: Protista includes all single-celled eukaryotes, forming a link with plants, animals and fungi.
Q2 — Kingdom Protista · easy · theory
The "red tides" in the sea are caused by rapid multiplication of:
A. Slime moulds
B. Dinoflagellates ✓ Correct
C. Euglenoids
D. Diatoms
Solution: Red dinoflagellates (e.g. Gonyaulax) bloom and make the sea appear red; toxins can kill fish.
Q3 — Kingdom Protista · easy · theory
The cell walls of diatoms (chrysophytes) are made of:
A. Silica (indestructible, forming "diatomaceous earth") ✓ Correct
B. Calcium carbonate
C. Chitin
D. Cellulose only
Solution: Diatom walls have two overlapping silica shells (frustule); their deposits form diatomaceous earth.
Q4 — Kingdom Protista · medium · theory
Euglenoids are considered a connecting link between plants and animals because they:
A. Have a rigid cellulose wall
B. Are always parasitic
C. Are photosynthetic in light but heterotrophic in darkness (and lack a cell wall) ✓ Correct
D. Reproduce only sexually
Solution: Euglena has a protein pellicle (no wall), photosynthesises in light, and behaves as a heterotroph in darkness.
Q5 — Kingdom Protista · medium · theory
Slime moulds are saprophytic protists whose spores possess:
A. Chitinous exoskeletons
B. No wall at all
C. True walls and are extremely resistant ✓ Correct
D. Silica shells
Solution: Under favourable conditions slime moulds form a plasmodium; the spores formed have true walls and are highly resistant.
Q6 — Kingdom Protista · medium · theory
Which protozoan group is exemplified by the malarial parasite Plasmodium?
A. Ciliated protozoans
B. Sporozoans ✓ Correct
C. Amoeboid protozoans
D. Flagellated protozoans
Solution: Sporozoans have an infectious spore-like stage; Plasmodium (malaria) is the classic example.
Q7 — Kingdom Protista · hard · theory
Diatoms are the chief "producers" in the oceans. This is chiefly because they:
A. Fix atmospheric nitrogen
B. Are heterotrophic decomposers
C. Are the largest protists
D. Are photosynthetic and extraordinarily abundant in phytoplankton ✓ Correct
Solution: As dominant photosynthetic phytoplankton, diatoms are the largest contributors to oceanic primary production.
Q8 — Kingdom Protista · hard · theory
Ciliated protozoans such as Paramoecium are characterised by:
A. A gullet, thousands of cilia, and coordinated ciliary movement of water/food ✓ Correct
B. An intracellular spore stage
C. A single flagellum
D. Pseudopodia for movement
Solution: Ciliates are aquatic, actively moving with cilia; the beating cilia steer food-laden water into the gullet.
Q9 — Kingdom Protista · hard · theory
Which pairing of protist and characteristic pigment/feature is CORRECT?
A. Dinoflagellates — two flagella and a stiff cellulose plate wall ✓ Correct
B. Slime moulds — always unicellular flagellates
C. Euglenoids — silica frustule
D. Diatoms — protein pellicle
Solution: Dinoflagellates typically have two flagella and stiff cellulose plates on the cell surface; colours vary (yellow, green, brown, red).