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Ecology & Environment MCQs for RAS

Practice 20 free ecology & environment multiple choice questions for RAS exam. Instant answers with explanations in Hindi and English.

Strengthen your Ecology & Environment knowledge for RAS with our free curated MCQ set. Every question follows real Rajasthan exam patterns. Switch between Hindi and English, and practice daily to build confidence before the exam.

RAS — Ecology & Environment

20 Questions • Instant results & explanations • Hindi & English

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Question 1 of 20

What is the primary ecological consequence of a highly complex food web, as opposed to a simple, linear food chain?

Question 2 of 20

Who coined the term 'Ecology' in the year 1869?

Question 3 of 20

In the etymology of the word 'Ecology', what is the exact meaning of the Greek root 'logos'?

Question 4 of 20

What is the primary condition required for a group of individuals to be classified scientifically as a 'Population'?

Question 5 of 20

Which foundational ecological concept was formulated by the British ecologist Charles Elton?

Question 6 of 20

If multiple distinct species of birds live in the exact same forest canopy, they are sharing the same:

Question 7 of 20

Match the fundamental Ecological term in List-I with its core characteristic in List-II: List-I A. Environment B. Ecology C. Conservation D. Homeostasis List-II 1. Sustainable management of natural capital 2. Stable, self-regulating equilibrium 3. Sum total of physical, chemical, and biological factors 4. Scientific study of reciprocal relationships

Question 8 of 20

Under which specific ecological scenario does the Pyramid of Number appear completely inverted rather than upright?

Question 9 of 20

Who was Ernst Haeckel, the individual credited with coining the term 'Ecology' in 1869?

Question 10 of 20

Which of the following is NOT an abiotic component mentioned in the context of an organism's habitat?

Question 11 of 20

The term 'Ecology' is derived from the Greek words 'oikos' and 'logos'. What does the word 'oikos' signify?

Question 12 of 20

Consider the following statements regarding 'Conservation': 1. It implies the mere preservation of natural resources in their pristine, untouched state. 2. It emphasizes the sustainable management of natural capital to yield benefits for both present and future generations. Which of the statements given above is/are correct?

Question 13 of 20

Consider the following statements regarding Producers (Autotrophs) in an ecosystem: 1. They synthesize complex organic food from simple inorganic substances. 2. All autotrophs depend exclusively on photosynthesis to synthesize their food. Which of the statements given above is/are correct?

Question 14 of 20

Arrange the following ecological concepts in descending order of their spatial and functional scale: 1. Biome 2. Population 3. Biosphere 4. Ecosystem 5. Community

Question 15 of 20

Which of the following is characterized by distinct energy flow and nutrient cycling within the biosphere?

Question 16 of 20

Why is the study of Ecology considered crucial for law enforcement officials like Police Sub-Inspectors?

Question 17 of 20

The 'Biosphere' integrates which of the following physical spheres of the Earth?

Question 18 of 20

Match List-I (Organism Role) with List-II (Example from Rajasthan Ecosystem) correctly: List-I A. Producer B. Primary Consumer C. Secondary Consumer D. Decomposer List-II 1. Leopard 2. Bacteria 3. Grass 4. Chinkara

Question 19 of 20

For a public administrator managing the Thar region, understanding ecology is crucial for mitigating which specific set of vulnerabilities?

Question 20 of 20

Assertion (A): Multiple species can coexist in the same habitat without necessarily outcompeting each other. Reason (R): The ecological niche is entirely specific to a single species, allowing organisms to occupy different functional roles within the same physical address. Choose the correct option:

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