Practice Test Sets (Total Questions: 100)

Topic Practice: Biological Classification NEET MCQs & Chapter Notes (Test - 1)

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About Biological Classification NEET MCQs & Chapter Notes MCQ

Ace Biological Classification for NEET UG with comprehensive MCQs, previous year questions, and NCERT-aligned notes on Monera, Protista, Fungi, viruses, and…

This Biological Classification NEET MCQs & Chapter Notes MCQ practice set is designed for students preparing for school exams and competitive exams. It contains 100 multiple choice questions divided into 2 test sets of up to 50 questions each. Every question has four options, and after answering you can see the correct option, a detailed explanation and how other users answered.

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Sample Biological Classification NEET MCQs & Chapter Notes Questions

Statement-Based: Statement I: R.H. Whittaker's five kingdom classification was mainly based on cell structure, body organisation, mode of nutrition, reproduction and phylogenetic relationships. Statement II: In earlier classification systems, bacteria, blue green algae, fungi, mosses, ferns, gymnosperms and angiosperms were all included under 'Plants' solely because they possessed a cell wall.
- A. Both Statement I and Statement II are correct
- B. Both Statement I and Statement II are incorrect
- C. Statement I is correct but Statement II is incorrect
- D. Statement I is incorrect but Statement II is correct
Assertion-Reason: Assertion (A): Archaebacteria can survive in extreme conditions such as hot springs and hypersaline areas. Reason (R): Archaebacteria differ from other eubacteria in having a complex branched-chain lipid monolayer/ether-linked membrane structure and a rigid cell wall lacking peptidoglycan.
- A. Both (A) and (R) are true and (R) is the correct explanation of (A)
- B. Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
- C. (A) is true but (R) is false
- D. (A) is false but (R) is true
PRACTICAL & HIGH-YIELD: During Gram Staining of bacteria, what is the chemical basis behind Gram-negative bacteria losing the crystal violet-iodine complex upon decolorization with alcohol?
- A. Gram-negative cell walls have a thick layer of peptidoglycan that shrinks upon alcohol treatment.
- B. Alcohol dissolves the outer lipopolysaccharide (LPS) membrane and washes out the dye complex from the thin peptidoglycan layer.
- C. Gram-negative cell walls lack lipids completely, preventing dye retention.
- D. Gram-negative bacteria possess teichoic acids which actively repel crystal violet.
NCERT Line-Based: Specialized cells called 'Heterocysts' present in Nostoc and Anabaena are non-photosynthetic because they:
- A. Lack Photosystem I and oxygenic enzymes
- B. Lack Photosystem II (PS-II) and do not evolve O2, maintaining an anaerobic environment for Nitrogenase
- C. Contain RuBisCO in high concentrations which consumes oxygen rapidly
- D. Possess a very thin wall allowing free diffusion of atmospheric nitrogen and oxygen
Multiple Statement Question: Read the following statements regarding Mycoplasma: (i) They completely lack a cell wall. (ii) They are the smallest living cells known. (iii) They can survive without oxygen (facultative/obligate anaerobes). (iv) They are fully sensitive to penicillin antibiotics because penicillin inhibits their ribosomal synthesis. Which of the statements given above are CORRECT?
- A. (i), (ii), and (iii) only
- B. (i) and (ii) only
- C. (ii), (iii), and (iv) only
- D. All (i), (ii), (iii), and (iv)

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