🎯 NEET 2026 Daily Practice Problem (DPP)
Topic: Biological Classification | 20 High-Yield MCQs
Q1. R.H. Whittaker proposed the Five Kingdom Classification in which year?
- 1969
- 1959
- 1758
- 1869
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Correct Answer: (1) 1969
Explanation: R.H. Whittaker proposed the Five Kingdom Classification (Monera, Protista, Fungi, Plantae, Animalia) in 1969.
Q2. Which of the following organisms are known as the ‘Chief Producers’ in the oceans?
- Dinoflagellates
- Diatoms
- Euglenoids
- Blue-green algae
✅ View Answer & Explanation
Correct Answer: (2) Diatoms
Explanation: Diatoms are the chief producers in the oceans. Their cell walls form diatomaceous earth.
Q3. Methanogens belong to:
- Eubacteria
- Archaebacteria
- Dinoflagellates
- Slime moulds
✅ View Answer & Explanation
Correct Answer: (2) Archaebacteria
Explanation: Methanogens are Archaebacteria found in marshy areas and the gut of ruminants.
Q4. The cell wall of fungi is composed of:
- Cellulose
- Pectin
- Chitin and Polysaccharides
- Peptidoglycan
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Correct Answer: (3) Chitin and Polysaccharides
Explanation: Fungal cell walls are characteristically made of Chitin (fungal cellulose).
Q5. Which of the following is commonly known as ‘Imperfect Fungi’?
- Phycomycetes
- Ascomycetes
- Basidiomycetes
- Deuteromycetes
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Correct Answer: (4) Deuteromycetes
Explanation: They are called imperfect because only their asexual or vegetative phases are known.
Q6. Naked cytoplasm, multinucleated and saprophytic are the characteristics of:
- Monera
- Protista
- Fungi
- Slime moulds
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Correct Answer: (4) Slime moulds
Explanation: Slime moulds are saprophytic protists. The body moves along decaying twigs and leaves.
Q7. The protein-rich layer in Euglenoids which makes their body flexible is called:
- Pellicle
- Capsule
- Cell wall
- Sheath
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Correct Answer: (1) Pellicle
Explanation: Euglenoids lack a cell wall. Instead, they have a protein-rich layer called pellicle.
Q8. Viruses have:
- DNA enclosed in a protein coat
- Prokaryotic nucleus
- Single chromosome
- Both DNA and RNA
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Correct Answer: (1) DNA enclosed in a protein coat
Explanation: Viruses have either DNA or RNA (never both) enclosed in a protein coat called capsid.
Q9. Which of the following statements is incorrect regarding Viroids?
- They were discovered by T.O. Diener
- They cause potato spindle tuber disease
- They have a protein coat
- Their RNA is of low molecular weight
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Correct Answer: (3) They have a protein coat
Explanation: Viroids lack the protein coat that is found in viruses, hence the name viroid.
Q10. Association between roots of higher plants and fungi is called:
- Lichen
- Fern
- Mycorrhiza
- BGA
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Correct Answer: (3) Mycorrhiza
Explanation: Mycorrhiza is a symbiotic association between fungi and roots of higher plants (e.g., Pinus).
Q11. The genetic material of Tobacco Mosaic Virus (TMV) is:
- Double stranded DNA
- Double stranded RNA
- Single stranded RNA
- Single stranded DNA
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Correct Answer: (3) Single stranded RNA
Explanation: TMV contains single-stranded RNA as its genetic material.
Q12. Heterocysts are found in:
- Nostoc and Anabaena
- Euglena
- Yeast
- Hydra
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Correct Answer: (1) Nostoc and Anabaena
Explanation: Heterocysts are specialized cells in Blue-Green Algae (Cyanobacteria) helpful for nitrogen fixation.
Q13. ‘Contagium vivum fluidum’ (infectious living fluid) was proposed by:
- D.J. Ivanowsky
- M.W. Beijerinck
- W.M. Stanley
- Robert Hooke
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Correct Answer: (2) M.W. Beijerinck
Explanation: Beijerinck demonstrated that the extract of the infected plants of tobacco could cause infection in healthy plants.
Q14. In which group are the cell walls forming two thin overlapping shells fitting together like a soap box?
- Dinoflagellates
- Slime moulds
- Chrysophytes
- Euglenoids
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Correct Answer: (3) Chrysophytes
Explanation: Chrysophytes include Diatoms and Golden algae. Their walls are embedded with silica and fit together like a soap box.
Q15. Morels and Truffles are edible delicacies belonging to:
- Ascomycetes
- Basidiomycetes
- Deuteromycetes
- Phycomycetes
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Correct Answer: (1) Ascomycetes
Explanation: Morels and Truffles are members of Ascomycetes (Sac fungi).
Q16. Prions consist mainly of:
- DNA
- RNA
- Abnormally folded proteins
- Lipids
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Correct Answer: (3) Abnormally folded proteins
Explanation: Prions are infectious agents composed entirely of protein material (caused Mad Cow disease).
Q17. The kingdom boundary of which of the following is not well defined?
- Monera
- Protista
- Fungi
- Plantae
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Correct Answer: (2) Protista
Explanation: Protista contains unicellular eukaryotes. What may be a ‘photosynthetic protistan’ to one biologist may be a ‘plant’ to another.
Q18. Alternaria, Colletotrichum and Trichoderma belong to:
- Phycomycetes
- Ascomycetes
- Basidiomycetes
- Deuteromycetes
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Correct Answer: (4) Deuteromycetes
Explanation: These are imperfect fungi reproducing only by asexual spores called conidia.
Q19. Which of the following is correct about Lichens?
- They grow well in polluted areas
- They are good pollution indicators
- They promote pollution
- They are found in cities
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Correct Answer: (2) They are good pollution indicators
Explanation: Lichens do not grow in polluted areas (especially SO2 pollution).
Q20. Sexual reproduction in Fungi occurs by:
- Oospores, Ascospores, Basidiospores
- Zoospores, Sporangiospores, Conidia
- Oospores, Zoospores, Conidia
- Fragmentation, Fission, Budding
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Correct Answer: (1) Oospores, Ascospores, Basidiospores
Explanation: These are sexual spores. Option 2 lists asexual spores. Option 4 lists vegetative methods.