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RAS — Ecology & Conservation MCQs

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

Master Ecology & Conservation under Ecology & Environment for RAS with our curated MCQ set. Every question follows real Rajasthan exam patterns. Switch between Hindi and English anytime.

RAS — Ecology & Environment — Ecology & Conservation

20 Questions • Instant results & explanations • Hindi & English

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Question 1 of 20

Match List-I (Levels of Ecological Organization) with List-II (Description) and select the correct answer using the codes given below: List-I A. Population B. Community C. Ecosystem D. Biome List-II 1. Structural and functional unit involving energy flow and nutrient cycling. 2. Regional unit characterized by major vegetation type in a specific climate zone. 3. Assemblage of interacting populations of different species sharing a habitat. 4. Group of individuals of the same species living in a specific geographical area.

Question 2 of 20

Assertion (A): It is physically impossible for a stable ecosystem to feature an inverted Pyramid of Energy. Reason (R): The universal laws of thermodynamics dictate that energy is inevitably lost as metabolic heat at every successive trophic level.

Question 3 of 20

Which of the following describes the flow of energy and the cycling of nutrients?

Question 4 of 20

Why is the biological process of Secondary Succession typically much faster than Primary Succession?

Question 5 of 20

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

Question 6 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 7 of 20

According to Gause's Competitive Exclusion Principle, what is the ultimate ecological outcome when two species occupy the exact same ecological niche in the same habitat indefinitely?

Question 8 of 20

What is the ultimate condition defining a 'Climax Community' in the timeline of ecological succession?

Question 9 of 20

The concept of 'Ecological Pyramids', utilized to graphically represent the hierarchical trophic structures of populations, biomass, and energy, was originally developed by:

Question 10 of 20

Which is the highest and most inclusive level of ecological organization that encompasses all life and ecosystems?

Question 11 of 20

Assertion (A): Maintaining ecological balance is purely an academic exercise with no real-world application. Reason (R): Ecological homeostasis governs practical daily necessities such as the availability of clean air, potable water, and agricultural stability. Select the correct option:

Question 12 of 20

For REET candidates aiming to become educators, why is a profound understanding of ecology explicitly stated as 'non-negotiable'?

Question 13 of 20

In the hierarchical structure of consumers within an ecosystem, which of the following represents the correct ecological sequence starting from the primary level to the tertiary level?

Question 14 of 20

Unlike a grazing food chain, a Detritus Food Chain fundamentally begins its energy sequence with:

Question 15 of 20

Which of the following components uniquely defines an 'Ecological Niche' as opposed to a 'Habitat'?

Question 16 of 20

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

Question 17 of 20

Consider the following statements regarding the Pyramid of Biomass: 1. It represents the total dry weight of living biological matter at each trophic level. 2. In aquatic ecosystems, it is typically inverted due to the low standing crop biomass of phytoplankton at any given moment. Which of the statements given above is/are correct?

Question 18 of 20

Which concept refers to the maintenance of a stable, self-regulating equilibrium within an ecosystem?

Question 19 of 20

Consider the following statements: 1. The Forest Conservation Act is an example of an environmental law that necessitates an understanding of ecology for effective enforcement. 2. The primary aim of ecological conservation is to lock away resources so they can never be utilized by humans. Which of the statements given above is/are correct?

Question 20 of 20

According to the principles of biological energy transfer, which of the following processes primarily accounts for the 90% energy loss when energy moves from a herbivore to a primary carnivore?

More Ecology & Environment Subtopics

Practice other subtopics under Ecology & Environment to strengthen your RAS preparation.