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Previous year questions with solutions · 2000 – 2026
| Year | Questions | Papers | Avg / paper | Weightage |
|---|---|---|---|---|
| 2026 | 6 | 2 | 3 | 5.94% ↑60.4% |
| 2025 | 2 | 1 | 2 | 3.70% ↓29.6% |
| 2024 | 6 | 2 | 3 | 5.26% ↑10.5% |
| 2023 | 3 | 1 | 3 | 4.76% ↑4% |
| 2022 | 6 | 2 | 3 | 4.58% ↓8.4% |
| 2021 | 3 | 1 | 3 | 5.00% ↓16.7% |
| 2020 | 3 | 1 | 3 | 6.00% ↑59% |
| 2019 | 2 | 1 | 2 | 3.77% ↑115.1% |
| 2017 | 1 | 1 | 1 | 1.75% ↓32.7% |
| 2016 | 3 | 2 | 1.5 | 2.61% ↓5.2% |
| 2015 | 3 | 2 | 1.5 | 2.75% ↓48.6% |
| 2014 | 3 | 1 | 3 | 5.36% ↑98.2% |
| 2013 | 3 | 2 | 1.5 | 2.70% ↓7.2% |
| 2012 | 3 | 2 | 1.5 | 2.91% ↓47.6% |
| 2010 | 5 | 2 | 2.5 | 5.56% ↑55.6% |
| 2009 | 2 | 1 | 2 | 3.57% ↓1.8% |
| 2008 | 2 | 1 | 2 | 3.64% ↓38.2% |
| 2007 | 3 | 1 | 3 | 5.88% ↓30.6% |
| 2006 | 5 | 1 | 5 | 8.47% ↑433.9% |
| 2005 | 1 | 1 | 1 | 1.59% ↓70.9% |
| 2004 | 3 | 1 | 3 | 5.45% ↑69.1% |
| 2003 | 2 | 1 | 2 | 3.23% ↓31.2% |
| 2002 | 3 | 1 | 3 | 4.69% ↓44.7% |
| 2001 | 5 | 1 | 5 | 8.47% ↑14.4% |
| 2000 | 4 | 1 | 4 | 7.41% |
⚠ 1 of these questions are out of the current syllabus (marked on the question).
Which one of the following is not a characteristic of plant cells in the phase of elongation ?
Heterophyllous development in response to environment is an example of which of the following phenomena?
Which of the following plant growth regulators promotes internode elongation prior to flowering in cabbage?
Which of the following plant growth regulators is used as herbicide?
Length of the stem at time 0 is 20 cm. The arithmetic growth rate is 30 cm per day. What is the length of the stem at the end of the 7th day?
Read the following statements on plant growth and development. Choose the option with all correct statements.
Which one of the following phytohormones promotes nutrient mobilization which helps in the delay of leaf senescence in plants?
Auxin is used by gardeners to prepare weed-free lawns. But no damage is caused to grass as auxin
Formation of interfascicular cambium from fully developed parenchyma cells is an example for
Spraying sugarcane crop with which of the following plant growth regulators, increases the length of stem, thus, increasing the yield?
F. Skoog observed that callus proliferated from the internodal segments of tobacco stem when auxin was supplied with one of the following except :
Given below are some statements about plant growth regulators. Choose the correct set of statements from the options given below :
Spraying of which of the following phytohormone on juvenile conifers helps hastening the maturity period, that leads early seed production?
Which hormone promotes internode/petiole elongation in deep water rice?
In tissue culture experiments, leaf mesophyll cells are put in a culture medium to form callus. This phenomenon may be called as
Which one of the following plants does not show plasticity?
The gaseous plant growth regulator is used in plants to:
Production of Cucumber has increased manifold in recent years. Application of which of the following phytohormones has resulted in this increased yield as the hormone is known to produce female flowers in the plants:
The ability of plants to follow different pathways in response to environment leading to formation of different kinds of structures is called
Which of the following growth regulators is an adenine derivative?
The phenomenon by which the undividing parenchyma cells start to divide mitotically during plant tissue culture is called as
Plants follow different pathways in response to environment or phases of life to form different kinds of structures. This ability is called
The site of perception of light in plants during photoperiodism is
The plant hormone used to destroy weeds in a field
Which of the following is not an inhibitory substance governing seed dormancy?
Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop
The process of growth is maximum during
What is the site of perception of photoperiod necessary for induction of flowering in plants?
It takes very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield?
Fruit and leaf drop at early stages can be prevented by the application of