MOCK • NCERT Class 12Medium

NCERT Class 12 Biology Chapter 5 Molecular Basis of Inheritance Test Mock Test

This free online test covers Chapter 5, Molecular Basis of Inheritance, from the NCERT Class 12 Biology textbook. The 37 questions are written directly from the chapter — definitions, processes, worked examples and the points the book italicises — so a score here tells you how much of the chapter actually stuck, not how well you guess. Each answer carries an explanation that says why the right option is right and why the other three fail, which is where most of the learning happens. Attempt it after your first read of the chapter, then again before the exam. There is no negative marking, and you can review the full solution the moment you submit.

Duration

37 mins

Questions

37 MCQs

Total Marks

37 pts

Negative

0 per wrong

Topics Covered in This Paper

Biology
37 Qs100%

Sample Questions

Q1.What is the haploid content of human DNA, as given in the chapter?

  • A5386 nucleotides
  • B4.6 x 10^6 base pairs
  • C48502 base pairs
  • D3.3 x 10^9 base pairs

Q2.Which nitrogenous base is found in RNA but not in DNA?

  • ACytosine, which is absent from DNA
  • BUracil, which takes the place of thymine
  • CGuanine, which is a purine unique to RNA
  • DAdenine, which pairs only with ribose

Q3.How are two nucleotides joined to build a polynucleotide chain?

  • AThrough an N-glycosidic linkage between base and base
  • BThrough a peptide bond between the phosphate groups
  • CThrough hydrogen bonds between the two sugars
  • DThrough a 3 prime to 5 prime phosphodiester linkage

Before you begin

6 quick notes

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Each correct answer carries +1 marks.

Each wrong answer carries -0 marks.

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Disclaimer: The questions provided here are extracted and digitized from previous year papers using automated processes. They may contain typographical errors, formatting issues, or minor variations from the actual examination paper. While we have done our best to verify the accuracy of the official answer keys, discrepancies may occasionally exist. Please refer to the official commission website for the most authentic paper.

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FAQ

Frequently asked questions

Frequently Asked Questions

How many questions are in the NCERT Class 12 Biology Chapter 5 Molecular Basis of Inheritance Test mock test?
This paper has 37 multiple-choice questions carrying 37 marks in total, to be attempted in 37 minutes.
Is the NCERT Class 12 Biology Chapter 5 Molecular Basis of Inheritance Test mock test free to attempt?
Yes. You can attempt the full paper online for free on AI Test Planet, and see your score and correct answers immediately after submitting.
Does this paper have negative marking?
No, there is no negative marking on this paper, so an attempted guess costs you nothing.
Are solutions and explanations available?
Yes. After you submit, every question shows the correct answer with a step-by-step explanation, along with a topic-wise breakdown of your performance.