Previous year questions with solutions · 2000 – 2026
| Year | Questions | Papers | Avg / paper | Weightage |
|---|---|---|---|---|
| 2023 | 2 | 1 | 2 | 3.17% ▲ 4% vs last year |
| 2022 | 4 | 2 | 2 | 3.05% ▲ 83.2% vs last year |
| 2021 | 1 | 1 | 1 | 1.67% ▼ 58.3% vs last year |
| 2020 | 2 | 1 | 2 | 4.00% ▲ 112% vs last year |
| 2019 | 1 | 1 | 1 | 1.89% ▼ 48.1% vs last year |
| 2018 | 2 | 1 | 2 | 3.64% ▲ 109.1% vs last year |
| 2016 | 2 | 2 | 1 | 1.74% ▼ 36.8% vs last year |
| 2015 | 3 | 2 | 1.5 | 2.75% ▲ 54.1% vs last year |
| 2014 | 1 | 1 | 1 | 1.79% ▼ 50.4% vs last year |
| 2013 | 4 | 2 | 2 | 3.60% ▼ 7.2% vs last year |
| 2012 | 4 | 2 | 2 | 3.88% ▼ 25.4% vs last year |
| 2011 | 5 | 2 | 2.5 | 5.21% ▼ 6.3% vs last year |
| 2010 | 5 | 2 | 2.5 | 5.56% ▲ 211.1% vs last year |
| 2009 | 1 | 1 | 1 | 1.79% ▼ 1.8% vs last year |
| 2008 | 1 | 1 | 1 | 1.82% ▼ 69.1% vs last year |
| 2007 | 3 | 1 | 3 | 5.88% ▲ 247.1% vs last year |
| 2006 | 1 | 1 | 1 | 1.69% ▼ 46.6% vs last year |
| 2005 | 2 | 1 | 2 | 3.17% ▲ 74.6% vs last year |
| 2004 | 1 | 1 | 1 | 1.82% ▼ 62.4% vs last year |
| 2003 | 3 | 1 | 3 | 4.84% ▼ 4.8% vs last year |
| 2001 | 3 | 1 | 3 | 5.08% ▼ 8.5% vs last year |
| 2000 | 3 | 1 | 3 | 5.56% |
⚠ 43 of these questions are out of the current syllabus (marked on the question).
The function of leghaemoglobin in the root nodules of legumes is
Leguminous plants are able to fix atmospheric nitrogen through the process of symbiotic nitrogen fixation. Which one of the following statements is not correct during this process of nitrogen fixation?
Study the cycle shown below and select the option which gives correct words for all the four blanks A, B, C and D. [figure]
One of the free-living, anaerobic nitrogen-fixer is
An element playing important role in nitrogen fixation is
Which one of the following is not a micronutrient?
Manganese is required in
Nitrogen fixation in root nodules of Alnus is brought about by:
Which of the following is a flowering plant with nodules containing filamentous nitrogen-fixing micro-organism?
Which one of the following elements is not an essential micronutrient for plant growth?
A plant requires magnesium for
Sulphur is an important nutrient for optimum growth and productivity in
All of the following statements concerning the actinomycetous filamentous soil bacterium Frankia are correct except that Frankia
The deficiencies of micronutrients, not only affect growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below, which group of three elements shall affect most, both photosynthetic and mitochondrial electron transport?
If by radiation all nitrogenase enzymes are inactivated, then there will be no
Plants deficient of element zinc, show its effect on the biosynthesis of plant growth hormone
Boron in green plants assists in
Enzyme first used for nitrogen fixation
Passive absorption of minerals depends on
Roots of which plant contain a red pigment which has affinity for oxygen?
When the plants are grown in magnesium deficient but urea rich soil, the symptoms expressed are