NCERT Class 11 Biology Chapter 12 Respiration in Plants Test Mock Test
This free online test covers Chapter 12, Respiration in Plants, from the NCERT Class 11 Biology textbook. The 30 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
30 mins
Questions
30 MCQs
Total Marks
30 pts
Negative
0 per wrong
Topics Covered in This Paper
Sample Questions
Q1.Cellular respiration is defined in the chapter as the breaking of:
- AWater molecules by light energy, releasing oxygen and protons
- BATP molecules into ADP and inorganic phosphate wherever energy is needed
- CThe carbon-carbon bonds of complex compounds through oxidation within cells, releasing considerable energy
- DPeptide bonds of proteins by proteases, releasing free amino acids
Q2.Why is the energy released by oxidation in respiration not used directly by the cell?
- AIt is released entirely as heat, which cells are unable to absorb at any stage
- BIt is released in slow step-wise enzyme-controlled reactions and trapped as ATP, which is broken down wherever energy is needed
- CIt is used at once to reduce NAD+ and is therefore no longer available
- DIt is stored as glucose, which the cell can use only after translocation to green parts
Q3.Plants manage without specialised respiratory organs. Which reason for this does the chapter give?
- APlants store enough oxygen in their vacuoles to last through the night
- BGases are carried over long distances through the xylem to every living cell
- CRoots, stems and leaves respire at rates far higher than animals, so diffusion alone suffices
- DEach plant part takes care of its own gas-exchange needs, with very little transport of gases from one part to another
Before you begin
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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 11 Biology Chapter 12 Respiration in Plants Test mock test?
- This paper has 30 multiple-choice questions carrying 30 marks in total, to be attempted in 30 minutes.
- Is the NCERT Class 11 Biology Chapter 12 Respiration in Plants 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.