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NEET Exam  >  NEET Tests  >  Biology Class 12  >  Test: Energy Flow & Ecological Pyramids - NEET MCQ

Test: Energy Flow & Ecological Pyramids - NEET MCQ


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10 Questions MCQ Test Biology Class 12 - Test: Energy Flow & Ecological Pyramids

Test: Energy Flow & Ecological Pyramids for NEET 2025 is part of Biology Class 12 preparation. The Test: Energy Flow & Ecological Pyramids questions and answers have been prepared according to the NEET exam syllabus.The Test: Energy Flow & Ecological Pyramids MCQs are made for NEET 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Energy Flow & Ecological Pyramids below.
Solutions of Test: Energy Flow & Ecological Pyramids questions in English are available as part of our Biology Class 12 for NEET & Test: Energy Flow & Ecological Pyramids solutions in Hindi for Biology Class 12 course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt Test: Energy Flow & Ecological Pyramids | 10 questions in 10 minutes | Mock test for NEET preparation | Free important questions MCQ to study Biology Class 12 for NEET Exam | Download free PDF with solutions
Test: Energy Flow & Ecological Pyramids - Question 1
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Which of the following components are abiotic in an ecosystem?

Detailed Solution for Test: Energy Flow & Ecological Pyramids - Question 1
Abiotic components are non-living elements of an ecosystem, such as soil, water, and air. These components form the physical environment that interacts with the biotic (living) components.
Test: Energy Flow & Ecological Pyramids - Question 2
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What is the process of breaking down complex organic matter into inorganic substances called?

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Decomposition is the process by which decomposers like fungi and bacteria break down complex organic matter into simpler inorganic substances such as carbon dioxide, water, and nutrients.
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Test: Energy Flow & Ecological Pyramids - Question 3
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Which of the following best describes primary productivity?

Detailed Solution for Test: Energy Flow & Ecological Pyramids - Question 3
Primary productivity refers to the rate of biomass or organic matter production by autotrophic organisms (like plants) through photosynthesis.
Test: Energy Flow & Ecological Pyramids - Question 4
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In an aquatic ecosystem, which of the following is a limiting factor for productivity?
Detailed Solution for Test: Energy Flow & Ecological Pyramids - Question 4
Nutrient availability is the key limiting factor for productivity in aquatic ecosystems, as plants and phytoplankton require nutrients for growth.
Test: Energy Flow & Ecological Pyramids - Question 5
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What type of pyramid is generally inverted in an aquatic ecosystem?
Detailed Solution for Test: Energy Flow & Ecological Pyramids - Question 5
The pyramid of biomass is often inverted in aquatic ecosystems because the biomass of primary consumers (e.g., zooplankton) can exceed that of producers (e.g., phytoplankton) due to their high turnover rate.
Test: Energy Flow & Ecological Pyramids - Question 6
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What percentage of the incident solar radiation is photosynthetically active radiation (PAR)?
Detailed Solution for Test: Energy Flow & Ecological Pyramids - Question 6
Only 2-10% of the incident solar radiation is photosynthetically active radiation, which plants can utilize for photosynthesis.
Test: Energy Flow & Ecological Pyramids - Question 7
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Which of the following organisms are primary consumers in a grazing food chain?
Detailed Solution for Test: Energy Flow & Ecological Pyramids - Question 7
Zooplankton are primary consumers in aquatic ecosystems, feeding directly on phytoplankton, the producers in the food chain.
Test: Energy Flow & Ecological Pyramids - Question 8
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What is the correct formula for net primary productivity (NPP)?
Detailed Solution for Test: Energy Flow & Ecological Pyramids - Question 8
Net primary productivity (NPP) is calculated by subtracting the respiration losses (R) from gross primary productivity (GPP). Hence, NPP = GPP - R.
Test: Energy Flow & Ecological Pyramids - Question 9
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Which of the following is a decomposer?
Detailed Solution for Test: Energy Flow & Ecological Pyramids - Question 9
Fungi are decomposers that break down dead organic matter into simpler substances. Earthworms are detritivores, not decomposers.
Test: Energy Flow & Ecological Pyramids - Question 10
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What does the 10% law of energy transfer imply?
Detailed Solution for Test: Energy Flow & Ecological Pyramids - Question 10
The 10% law states that only 10% of the energy from one trophic level is transferred to the next, with the rest being lost as heat or used in metabolic processes.
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