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
- (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. - Differentiate between Net primary productivity and Gross primary productivity in an ecosystem.
- The process of mineralization by microorganisms helps in the release of:
- Why are restrictions imposed on MTP in India? Up to how many weeks or trimesters, is MTP considered relatively safe for a female, if necessary to perform, by a medical practitioner?
Read the passage given below and answer the question.
Food chains ‘P’ and ‘Q’ form an interconnection. ‘P’ initiates with wheat grass whose population supports a few grasshoppers, frogs and snakes.
‘Q’ starts with dead decaying leaves of wheat grass which are eaten by earthworms and then food chain is continued with frog of food chain ‘P’.
Identify the types of food chains ‘P’ and ‘Q’:
Questions Asked in CUET PG exam
Consider the following statements:
(A) Availability is generally conserved.
(B) Availability can neither be negative nor positive.
(C) Availability is the maximum theoretical work obtainable.
(D) Availability can be destroyed in irreversibility's.- CUET (PG) - 2025
- Thermodynamics
- An aeroplane is flying at a height of 15 km, where the temperature is -50°C. Assuming \( k = 1.4 \) and \( R = 287 \, \text{J/K . kg} \), the approximate speed of the plane corresponding to \( M = 2.0 \) will be?
- CUET (PG) - 2025
- Thermodynamics
- Identify the correct sequence of steps in a dihybrid cross to test Mendel's Law of Independent Assortment
A. Selection of two traits in the parent generation.
B. Crossing of pure - breeding parents.
C. Analysis of phenotypic ratios in the F₂ generation.
D. Observations of gamete combinations in the F₁ generation.
Choose the correct answer from the options given below:- CUET (PG) - 2025
- Genetics
- Select the phases which are included in the 'Interphase'.
A. S phase
B. M phase
C. G₁ phase
D. G₂ phase
Choose the correct answer from the options given below:- CUET (PG) - 2025
- Cell Biology
- Sequence the following events involved in a point mutation in DNA.
A. Alteration in the amino acid sequence of a protein.
B. Change in mRNA codon during transcription.
C. Substitution of a single nucleotide in the DNA sequence.
D. Possible disruption of protein function or structure.
Choose the correct answer from the options given below:- CUET (PG) - 2025
- Molecular Biology
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.