Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion: A The increase in CO2 concentration in the atmosphere has been largely the result of fossil fuel buring and deforestation.
Reason R: Carbon dioxide is the most important naturally occurring greenhouse gas present in the atmosphere. In the light of above statements, choose the correct answer from the options given below
Assertion: A The increase in CO2 concentration in the atmosphere has been largely the result of fossil fuel buring and deforestation.
Reason R: Carbon dioxide is the most important naturally occurring greenhouse gas present in the atmosphere. In the light of above statements, choose the correct answer from the options given below
- Both A and R are true and R is the correct explanation of A
- Both A and B are true but R is NOT the correct explanation of A
- A is true but R is false
- A is false but R is true
The Correct Option is B
Solution and Explanation
The correct option is (B):Both A and B are true but R is NOT the correct explanation of A
Top Questions on Ecosystem
Consider the following food chain: Grass → Grasshopper → Frog → Snake → Eagle If the amount of energy available at third trophic level is 50 kJ, the available energy at the producer level was:
Assertion (A): Food web is a network of several food chains operating in an ecosystem.
Reason (R): Food web decreases the stability of an ecosystem.We do not clean natural ponds or lakes, whereas an aquarium or a swimming pool needs to be cleaned regularly. Why?
- Differentiate between Net primary productivity and Gross primary productivity in an ecosystem.
- (A) Analyse the following ecosystems and discuss, which will be more productive in terms of primary productivity:
A young forest, a natural old forest, a shallow polluted lake.
Questions Asked in CUET PG exam
- Upper palaeolithic culture in India is dominated by:
- CUET (PG) - 2025
- Prehistoric Archaeology
- Which of the following species are included among gracile australopithecines?
A. A. africanus
B. A. boisei
C. A. afarensis
D. A. anamensis
Choose the correct answer from the options given below:- CUET (PG) - 2025
- Paleoanthropology
- A bought an article at a certain price and sold it at 10% profit. B bought the same article at a price 10% lesser than A and sold it at ₹18 lesser than A. B's gain percentage in this deal is 20%. At what price B bought the article?
- CUET (PG) - 2025
- Profit and Loss
- The traffic lights at three different road crossings change after every 48 seconds, 72 seconds and 108 seconds respectively. If they all change simultaneously at 8:20:00 hours, then at what time will they again change simultaneously?
- CUET (PG) - 2025
- Quantitative Aptitude
- In terracotta which materials are mainly used to build strong clay
(A) Grog
(B) Metal
(C) Cotton
(D) Stone
Choose the correct answer from the options given below:- CUET (PG) - 2025
- Ceramics and Pottery
Concepts Used:
Ecosystem
An ecosystem is a structural and functional unit of ecology where the living organisms come in to interact with each other and the surrounding environment.
Structure of the Ecosystem:
The structure of an ecosystem is distinguished by the organization of both biotic and abiotic components. This involves the distribution of energy in our environment. It also comprises the climatic conditions prevailing in that particular environment.
There are two main components of the structure of an ecosystem, namely:
- Biotic Components
- Abiotic Components
The biotic and abiotic components are interconnected in an ecosystem. It is an open system where the energy and components can flow through the boundaries.