Ecology & Environment MCQs for LDC
Practice Ecology & Environment under Science & Tech for LDC with 20 free MCQs in Hindi and English.
LDC — Ecology & Environment
20 Questions • Instant results & explanations • Hindi & English
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Question 1 of 20
In the context of nutrient cycling within an ecosystem, which of the following best describes the fundamental difference between energy flow and biogeochemical cycles?
Question 2 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 3 of 20
The fourth generation of biofuels is characterized by being primarily derived from which of the following modified sources?
Question 4 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 5 of 20
Which of the following institutions has been formally constituted to replace the Chief Minister's Rajasthan Economic Transformation Advisory Council (CMRETAC)?
Question 6 of 20
Among the 17 comprehensive global Sustainable Development Goals (SDGs), which specific goal focuses extensively on 'Life on Land,' aiming to meticulously protect and restore terrestrial ecosystems?
Question 7 of 20
The primary function of CITES (Convention on International Trade in Endangered Species of Wild Fauna and Flora) is to:
Question 8 of 20
Which of the following abiotic components acts as a direct structural link between the biotic and abiotic realms of an ecosystem?
Question 9 of 20
Which dynamic component is shared among all populations within a 'Community'?
Question 10 of 20
Arrange the following levels of ecological organization in ascending order of complexity: 1. Community 2. Organism 3. Biome 4. Ecosystem 5. Population Select the correct code:
Question 11 of 20
If 'Ecology' deals with the reciprocal relationships between organisms and their environment, which word best encapsulates the 'living' part of this relationship?
Question 12 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 13 of 20
Which level of ecological organization describes the 'global sum of all ecosystems', effectively acting as the integrated zone of life on Earth?
Question 14 of 20
According to the standardized National Air Quality Index (IND-AQI) maintained by the Central Pollution Control Board (CPCB), an AQI value falling precisely within the range of 101-200 is categorized under which health standard?
Question 15 of 20
A single robust tree serving as the habitat and primary food source for hundreds of herbivorous insects, which in turn host thousands of microscopic parasites, perfectly illustrates a:
Question 16 of 20
Which specific organisms are primarily responsible for the execution of chemosynthesis in ecosystems devoid of sunlight?
Question 17 of 20
Which of the following statements profoundly characterizes the functional nature of Biogeochemical Cycles?
Question 18 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 19 of 20
In the study of ecosystem dynamics, the term 'Climax Community' specifically refers to:
Question 20 of 20