Environment & Ecology - MOST IMPORTANT NDA Previous Year Questions
Practice real questions from previous year exams of NDA.
📘 Basics of Environment & Ecology📚 Ecological Hierarchy
Q1
Which one of the following is the correct sequence about various levels of organization of Biosphere?
🎯 NDA (II) 2015
📘 In Situ Conservation – Protected Areas📚 Biosphere Reserves
Q2
Which set of the following biosphere reserves in India is included in the World Network of Biosphere Reserves?
🎯 NDA (II) 2017
📘 Biodiversity📚 Biodiversity Hotspots and Hope Spots
Q3
A biogeographic region with significant reservoir of biodiversity that is under threat from humans is called as
🎯 NDA (II) 2011
📘 In Situ Conservation – Protected Areas📚 Biosphere Reserves
Q4
Nokrek Biosphere Reserve is located in
🎯 NDA (II) 2012
📘 Food Chain, Food Web & Ecological Pyramids📚 Types of Biotic Interactions in a Food Web (Mutualism, Commensalism, etc.)
Q5
Which one of the following shows a unique relationship with an insect that has coevolved with it and that is the only insect that can pollinate this tree?
🎯 NDA & NA (II) Exam 2023
📘 Ecological Efficiency📚 Energy Flow in Food Chain
Q6
The green plants in a terrestrial eco-system absorb sunlight that falls on their leaves and convert it into food energy. The percentage of solar radiation absorbed by green plants for the process of photosynthesis is about:
🎯 NDA & NA (II) Exam 2023
📘 Indian Biodiversity📚 Misc
Q7
According to the Forest Survey Report, 2021, area-wise which one of the following States has the largest forest cover in India?
🎯 NDA NA Exam-I: 2022
📘 Food Chain, Food Web & Ecological Pyramids📚 Food Chain and its Types
Q8
Which of the following constitute a food chain?
🎯 NDA (I) 2018
📘 Ecosystem - Structure & Components📚 Biotic Components of Ecosystem
Q9
Which one of the following organisms represents the primary consumer category in an ecosystem?
🎯 NDA (I) 2019
📘 Functional Classification of Species📚 Indicator Species
Q10
Which of the following groups of plants can be used as indicators of SO2 pollution of air?
🎯 NDA (II) 2014
📘 Tropical Biomes📚 Tropical Thorn Forest
Q11
A person had visited a region in India and found trees, such as Khair, Neem, Khejri and Palas. Which one of the following regions is she/he expected to have visited?
🎯 NDA NA Exam- I: 2022
📘 In Situ Conservation – Protected Areas📚 National Parks
Q12
Which of the following pairs is/are correctly matched?
National Park — Famous for
1. Ranthambhore : Tiger
2. Periyar : Elephant
3. Manas : Lion
4. Gir : Rhinoceros
Select the correct answer using the code given below :
🎯 NDA (I) 2016
📘 In Situ Conservation – Protected Areas📚 Tiger Reserves
Q13
Which one among the following is the correct order of tiger reserves situated from North to South in India?
🎯 NDA (I) 2017
📘 In Situ Conservation – Protected Areas📚 Wildlife Sanctuaries
Q14
Consider the following Wildlife Sanctuaries of India.
1. Shikari Devi 2. Bhadra
3. Simlipal 4. Pachmarhi
Which one of the following is the correct order of the above wildlife Sanctuaries in terms of their location from south to north?
🎯 NDA (II) 2018
📘 In Situ Conservation – Protected Areas📚 Tiger Reserves
Q15
Which one among the following is the largest tiger reserve of India in terms of area of the core/critical tiger habitat?
🎯 NDA (I) 2018
📘 Types of Ecosystems - Wetland Ecosystem📚 Ramsar Sites of India
Q16
How many Ramsar conservation sites have been enlisted from India so far?
🎯 NDA (II) 2019
📘 Classification of Species under IUCN Red List📚 Endangered Species (EN)
Q17
The International Union for Conservation of Nature (IUCN) has recently categorized the Red Sanders (Red Sandalwood) into
🎯 NDA NA Exam-I : 2022
📘 Climate Change - Major Climate-Relevant Gases & Compounds📚 Carbon Dioxide (CO2)
Q18
Which one of the following sectors is the largest contributor to carbon dioxide emissions from fuel consumption in India?
🎯 NDA (II) 2016
📘 Climate Change - Major Climate-Relevant Gases & Compounds📚 Misc
Q19
Which one of the following is not a Green House Gas?
🎯 NDA (II) 2015
📘 Climate Change - Major Climate-Relevant Gases & Compounds📚 Carbon Dioxide (CO2)
Q20
Which one of the following greenhouse gases is in largest concentration in the atmosphere?
🎯 NDA (II) 2018