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Practice Plants - Plant, Animal and Microbial Biotechnology - Biotechnology previous year questions organised from real papers, with year-wise coverage and clear topic navigation.
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Year-wise coverage for Plants. Each bar uses a separate theme-derived color.
How the classified questions are distributed by difficulty.
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Top topics across the included previous year papers.
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Question coverage for the most populated papers. Every active PYP paper remains listed below.
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| Paper | Year / session | Questions in this view | Open |
|---|---|---|---|
| Biotechnology (BT) 2025 | 2025 | 1 | View paper |
| Biotechnology (BT) 2024 | 2024 | 3 | View paper |
| Biotechnology (BT) 2023 | 2023 | 3 | View paper |
| Biotechnology (BT) 2021 | 2021 | 1 | View paper |
| Biotechnology (BT) 2020 | 2020 | 2 | View paper |
| Biotechnology (BT) 2019 | 2019 | 1 | View paper |
| Biotechnology (BT) 2018 | 2018 | 2 | View paper |
| Biotechnology (BT) 2017 | 2017 | 1 | View paper |
| Biotechnology (BT) 2016 | 2016 | 1 | View paper |
| Biotechnology (BT) 2014 | 2014 | 4 | View paper |
| Biotechnology (BT) 2013 | 2013 | 1 | View paper |
| Biotechnology (BT) 2012 | 2012 | 3 | View paper |
Practice every matching question in batches of 20, with every available option.
| Group I | Group II |
|---|---|
| P. Glyphosate | 1. Nitrilase |
| Q. Bromoxynil | 2. Acetolactatesynthetase |
| R. Sulphonylureas | 3. Dehalogenase |
| S. Dalapon | 4. 5-Enolpyruvyl shikimate-3-phosphate synthase |
Prior exposure of plants to pathogens is known to increase resistance to future pathogen attacks. This phenomenon is known as
The pungency of mustard seeds is primarily due to secondary metabolites such as isothiocyanate and nitrile. The pungency is usually felt only when the seeds are crushed. This is because of
If protoplasts are placed in distilled water, they swell and burst as a result of endosmosis. The plot representing the kinetics of burst is
Match the secondary metabolites (Column-I) with the corresponding plant species (Column-II).
| Column-I | Column-II |
|---|---|
| P. Morphine | 1. Datura stramonium |
| Q. Pyrethrins | 2. Catharanthus roseus |
| R. Scopolamine | 3. Papaver somniferum |
| S. Vincristine | 4. Tagetes erecta |
Which one of the following plant secondary metabolites is a natural insecticide?
Which of the following combinations of plant hormones and their associated function are CORRECT?
| Hormone | Function |
|---|---|
| P. Abscisic acid | Breaks seed dormancy |
| Q. Auxin | Induces cell division |
| R. Ethylene | Stimulates ripening of fruits |
| S. Gibberellin | Promotes seed dormancy |
Which one of the following plant growth regulators facilitate adventitious root formation?
Which of the following plant-based secondary metabolites belong(s) to the class of alkaloids?
Which of the following is/are considered as biotic elicitor(s) in plant cell culture?
Which of the following is/are synthetic auxin(s) that does/do NOT occur naturally?
Correctly match the herbicide with its mode of development of resistance in plants.
| Herbicide | Mode of development of resistance |
|---|---|
| P. Imidazolinones | 1. Transformation of bacterial nitrilase gene |
| Q. Bromoxynil | 2. Transformation of resistant version of acetolactate synthetase |
| R. Glufosinate | 3. Transformation of tfdA gene from Alcaligenes, which encodes a dioxygenase |
| 4. Transformation of bar gene from Streptomyces hygroscopicus which encodes phosphinothricin acetyltransferase |
Showing 20 of 23 questions