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Previous year question hub

Ecosystem - Botany - Biology Previous Year Questions

Practice Ecosystem - Botany - Biology previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

37Papers
26Years
88Questions
1Topics

Ecosystem question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Ecosystem. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Not classified 81 92%
Easy 7 8%

Question type distribution

MCQ, numerical, multiple-select and other formats found in these papers.

Multiple Choices 88 100%

Subject weightage

Top subjects by unique question coverage.

Biology
88 Qs

Most asked topics

Top topics across the included previous year papers.

Botany
88 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Ecosystem
88 Qs

Paper coverage

Question coverage for the most populated papers. Every active PYP paper remains listed below.

NEET 2026
3 Qs
RE-NEET 2026
2 Qs
NEET 2025
4 Qs
NEET 2024 RE EXAMINATION
2 Qs
NEET 2024
1 Qs
NEET 2023
4 Qs
NEET 2023 MANIPUR
3 Qs
NEET 2022 PHASE 2
5 Qs
NEET 2022 Phase 1
3 Qs
NEET 2021
3 Qs
NEET 2020 PHASE 1
2 Qs
NEET 2019
2 Qs
AIIMS 2018
1 Qs
NEET 2018
1 Qs
NEET 2017
1 Qs
NEET 2016 PHASE 1
3 Qs
NEET 2016 PHASE 2
1 Qs
AIPMT 2015 Cancelled Paper
5 Qs
AIPMT 2015
3 Qs
AIPMT 2014
3 Qs
NEET 2013
3 Qs
NEET 2013 KARNATAKA
3 Qs
AIPMT 2012 PRELIMS
5 Qs
AIPMT 2012 MAINS
3 Qs
AIPMT 2011 PRELIMS
4 Qs
AIPMT 2011 MAINS
3 Qs
AIPMT 2010 MAINS
1 Qs
AIPMT 2010 PRELIMS
1 Qs
AIPMT 2009
2 Qs
AIPMT 2008
3 Qs
AIPMT 2007
1 Qs
AIPMT 2006
1 Qs
AIPMT 2004
2 Qs
AIPMT 2003
1 Qs
AIPMT 2002
1 Qs
AIPMT 2001
1 Qs
AIPMT 2000
1 Qs

Included previous year papers

Newest papers appear first. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
NEET 202620263View paper
RE-NEET 202620262View paper
NEET 202520254View paper
NEET 202420241View paper
NEET 2024 RE EXAMINATION20242View paper
NEET 202320234View paper
NEET 2023 MANIPUR20233View paper
NEET 2022 Phase 120223View paper
NEET 2022 PHASE 220225View paper
NEET 202120213View paper
NEET 2020 PHASE 120202View paper
NEET 201920192View paper
AIIMS 201820181View paper
NEET 201820181View paper
NEET 201720171View paper
NEET 2016 PHASE 120163View paper
NEET 2016 PHASE 220161View paper
AIPMT 201520153View paper
AIPMT 2015 Cancelled Paper20155View paper
AIPMT 201420143View paper
NEET 201320133View paper
NEET 2013 KARNATAKA20133View paper
AIPMT 2012 MAINS20123View paper
AIPMT 2012 PRELIMS20125View paper
AIPMT 2011 MAINS20113View paper
AIPMT 2011 PRELIMS20114View paper
AIPMT 2010 MAINS20101View paper
AIPMT 2010 PRELIMS20101View paper
AIPMT 200920092View paper
AIPMT 200820083View paper
AIPMT 200720071View paper
AIPMT 200620061View paper
AIPMT 200420042View paper
AIPMT 200320031View paper
AIPMT 200220021View paper
AIPMT 200120011View paper
AIPMT 200020001View paper

All Ecosystem previous year questions

Practice every matching question in batches of 20, with every available option.

1
2000 · Biology · Botany · Ecosystem
AIPMT 2000
Which is the reason for highest biomass in aquatic ecosystem ?
A
Benthonic and brown algae
B
Nano plankton, blue green algae, green algae
C
Diatoms
D
Sea grass, and slime molds
Open complete paper
2
2001 · Biology · Botany · Ecosystem
AIPMT 2001
Plant Decomposers are : -
A
Protista and Animalia
B
Anibalia and Mogna
C
Monera and fungi
D
Fungi and plants
Open complete paper
3
2002 · Biology · Botany · Ecosystem
AIPMT 2002
Bamboo plant is growing in a far forest then what will be the trophic level of it ?
A
Second trophic level (T2)
B
First trophic level (T1)
C
Fourth trophic level (T4)
D
Third trophic level (T3)
Open complete paper
4
2003 · Biology · Botany · Ecosystem
AIPMT 2003
Which of the following plants are used as green manure in crop fields and in sandy soils ?
A
Calotropis procera and Phyllanthus niruri
B
Dichanthium annulatum and Azolla nilotica
C
Saccharum munja and Lantana camara
D
Crotalaria juncea and Alhagi camelorum
Open complete paper
5
2004 · Biology · Botany · Ecosystem
AIPMT 2004
Which of the following is expected to have the highest value (gm/m2/yr) in a grassland ecosystem ?
A
Net production (NP)
B
Secondary production
C
Tertiary production
D
Gross production (GP)
Open complete paper
6
2004 · Biology · Botany · Ecosystem
AIPMT 2004
An ecosystem which can be easily damaged but can recover after some time if damaging effect stops will be having -
A
High stability and high resilience
B
Low stability and high resilience
C
High stability and low resilience
D
Low stability and low resilience
Open complete paper
7
2006 · Biology · Botany · Ecosystem
AIPMT 2006
Which one of the following is not used for construction of ecological pyramids ?
A
Rate of energy flow
B
Dry weight
C
Fresh weight
D
Number of individuals
Open complete paper
8
2007 · Biology · Botany · Ecosystem
AIPMT 2007
Which one of the following ecosystem types has the highest annual net primary productivity ?
A
Temperate evergreen forest
B
Temperate deciduous forest
C
Tropical rain forest
D
Tropical deciduous forest
Open complete paper
9
2008 · Biology · Botany · Ecosystem
AIPMT 2008
The slow rate of decomposition of fallen logs in nature is due to their:
A
low moisture content
B
poor nitrogen content
C
anaerobic environment around them
D
low cellulose content
Open complete paper
10
2008 · Biology · Botany · Ecosystem
AIPMT 2008
Consider the following statements concerning food chains:
(i) Removal of 80% tigers from an area resulted in greatly increased growth of vegetation
(ii) Removal of most of the carnivores resulted in an increased population of deers
(iii) The length of food chains is generally limited to 3-4 trophic levels due to energy loss
(iv) The length of food chains may vary from 2 to 8 trophic levels
Which of two of the above statements are correct ?
A
(iii), (iv)
B
(ii), (iii)
C
(i), (iv)
D
(i), (ii)
Open complete paper
11
2008 · Biology · Botany · Ecosystem
AIPMT 2008
About 70% of total global carbon is found in:
A
Grasslands
B
Agroecosystems
C
Oceans
D
Forests
Open complete paper
12
2009 · Biology · Botany · Ecosystem
AIPMT 2009
Which one of the following types organisms occupy more than one trophic level in a pond ecosystem ?
A
Phytoplankton
B
Zooplankton
C
Frog
D
Fish
Open complete paper
13
2009 · Biology · Botany · Ecosystem
AIPMT 2009
The correct sequence of plants in hydrosere is :
A
Volvox → Hydrilla → Pistia → Scirpus → Lantana → Oak
B
Pistia → Volvox → Scirpus → Hydrilla → Oak → Lantana
C
Oak → Lantana → Volvox → Hydrilla → Pistia → Scirpus
D
Oak → Lantana → Scirpus → Pistia → Hydrilla → Volvox
Open complete paper
14
2010 · Biology · Botany · Ecosystem
AIPMT 2010 MAINS
Which of the following representations shows the pyramid of numbers in a forest ecosystem ? AIPMT 2010 Mains Biology - Ecosystem Question 48 English
A
B
B
A
C
D
D
C
Open complete paper
15
2010 · Biology · Botany · Ecosystem
AIPMT 2010 PRELIMS
The biomass available for consumption by the herbivores and the decomposers is called –
A
Standing crop
B
Net primary productivity
C
Gross primary productivity
D
Secondary productivity
Open complete paper
16
2011 · Biology · Botany · Ecosystem
AIPMT 2011 MAINS
Which one of the following animals may occupy more than one trophic levels in the same ecosystem at the same time ?
A
Lion
B
Frog
C
Goat
D
Sparrow
Open complete paper
17
2011 · Biology · Botany · Ecosystem
AIPMT 2011 MAINS
The breakdown of detritus into smaller particles by earthworm is a process called
A
Fragmentation
B
Catabolism
C
Mineralisation
D
Humification
Open complete paper
18
2011 · Biology · Botany · Ecosystem
AIPMT 2011 MAINS
Both, hydrarch and xerarch successions lead to :
A
Xeric conditions
B
Excessive wet conditions
C
Highly dry conditions
D
Medium water conditions
Open complete paper
19
2011 · Biology · Botany · Ecosystem
AIPMT 2011 PRELIMS
Which one of the following statements for pyramid of energy is incorrect, whereas the remaining three are correct?
A
It shows energy content of different trophic level organisms
B
It is upright in shape
C
It is inverted in shape
D
Its base is broad
Open complete paper
20
2011 · Biology · Botany · Ecosystem
AIPMT 2011 PRELIMS
Which one of the following statements is correct for secondary succession?
A
It follows primary succession
B
It occurs on deforested site
C
It is similar to primary succession except that it has a relatively fast pace.
D
It begins on a bare rock.
Open complete paper

Showing 20 of 88 questions