Ecology & Environment MCQs for Rajasthan SI
Practice Ecology & Environment under Science & Tech for Rajasthan SI with 20 free MCQs in Hindi and English.
Rajasthan SI — Ecology & Environment
20 Questions • Instant results & explanations • Hindi & English
0 / 20
Question 1 of 20
Which of the following defines a 'Population' in ecological terms?
Question 2 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 3 of 20
In the context of the environment, what does the term 'Abiotic' refer to?
Question 4 of 20
Recognized for its exemplary ecological transition, which of the following villages in Rajasthan is systematically transforming into a 'zero-waste' model community through targeted Green Technology interventions?
Question 5 of 20
Which of the following statements correctly differentiates 'Community' from 'Population' in ecological studies?
Question 6 of 20
What is the primary ecological consequence of a highly complex food web, as opposed to a simple, linear food chain?
Question 7 of 20
The stratospheric ozone layer surrounding the Earth primarily acts as a crucial natural biological shield against which specific type of radiation?
Question 8 of 20
What distinguishes a 'Community' from an 'Ecosystem'?
Question 9 of 20
In the broader classification of Biogeochemical Cycles, the Carbon Cycle is fundamentally defined as a:
Question 10 of 20
Consider the following statements regarding Ecological Succession: 1. Primary succession takes place in areas previously occupied by a community that was wiped out by a disturbance like a forest fire. 2. Lichens are considered pioneer species capable of initiating soil formation on bare rocks. Which of the statements given above is/are correct?
Question 11 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 12 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 13 of 20
Which of the following is NOT an abiotic component mentioned in the context of an organism's habitat?
Question 14 of 20
Which set of factors comprehensively defines the 'Environment' of an organism?
Question 15 of 20
Which of the following components uniquely defines an 'Ecological Niche' as opposed to a 'Habitat'?
Question 16 of 20
Which specific components of an ecosystem are categorized as the crucial structural links that bridge the biotic and abiotic realms?
Question 17 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 18 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 19 of 20
According to Lindeman's 10% Law of energy transfer, what exactly accounts for the 90% of energy that is NOT assimilated into the biomass of the subsequent trophic level?
Question 20 of 20