Biology - Respiration in Plants
Practise 5 IAT (IISER) previous year questions on Respiration in Plants, compiled from papers spanning 2017 to 2025. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty IAT (IISER) tests.
Respiration in Plants has been asked in 3 of the 9 years of IAT (IISER) papers analysed (2017–2026), with 5 questions in all. 20% of them were easy, 60% moderate and 20% tough. Most of its questions came from 2022, with 2 questions that year. In the last three years (2023–2026) it had 1 question across 3 papers, about 0.3 per paper.
The chapter's 2 topics are not weighted equally: Aerobic Respiration (4 questions, 80%) and Glycolysis (1 question, 20%) have been asked the most. Aerobic Respiration has also led over the last five years, with 3 questions. Aerobic Respiration has produced the most tough questions (1).
- 1A cell suspension of actively respiring mitochondria is treated with either chemical X (experiment 1) or chemical Y (experiment 2), or left 2025Aerobic Respiration
- 2Match the enzymes in Column I with the cellular compartments in Column II. Which of the following combinations is correct?2024Aerobic Respiration
- 3Shown below are some of the reactions that occur in the metabolic pathway leading to complete oxidation of glucose during aerobic respiratio2022Glycolysis
- 4Which of the following figures CORRECTLY represents the chemiosmotic hypothesis of ATP synthesis occuring in a mitochondrion in a cell? (Key2022Aerobic Respiration
- 5During an oxidative phosphorylation the terminal electron acceptor is _____ (fill up the blank)2017Aerobic Respiration
Frequently Asked Questions
1.How many questions are available for Respiration in Plants?
This chapter includes 5 questions compiled from IAT (IISER) papers spanning 2017 to 2025.
2.Are these questions only from IAT (IISER), or from other exams too?
These are IAT (IISER) questions specifically for the Respiration in Plants chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.
3.Is Respiration in Plants an important chapter for IAT (IISER) Biology?
Respiration in Plants has appeared in 4 of the 10 years of IAT (IISER) papers covered here, with 5 questions across 4 papers - about one per paper it appears in.
4.What is the difficulty level of Respiration in Plants questions in IAT (IISER)?
Of the 5 questions analysed for this chapter, 20% are easy, 60% moderate and 20% tough. 2022 had the most, with 2 questions.
5.Which topics in Respiration in Plants should I focus on?
These topics have carried the most weightage in Respiration in Plants:
- Aerobic Respiration - 4 questions (80%)
- Glycolysis - 1 question (20%)
- Aerobic Respiration has produced the most tough questions (1).
6.Is Respiration in Plants's weightage in IAT (IISER) going up or down?
Across all 4 papers analysed, Respiration in Plants has averaged about 1.3 questions per paper. In the last three years (2023–2026), that average has fallen, at about 0.3 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.