The most likely reason for the development of resistance against pesticides in insects damaging a crop is
- Genetic recombination
- Directed mutations
- Acquired heritable changes
- Random mutations
The Correct Option is D
Solution and Explanation
Top Questions on energy flow through ecosystems
- In the given flowchart related to nitrogen cycle, choose the correct option for X and Y.
Atmospheric Nitrogen → Biological Nitrogen Fixation → (X) → Nitrates Ammonification → (Y)- GUJCET - 2025
- Biology
- energy flow through ecosystems
- What is the role of nitrogen-fixing bacteria in the ecosystem?
- GUJCET - 2025
- Biology
- energy flow through ecosystems
- The total energy fixed by a green plant is called:
- CUET (UG) - 2024
- Biology
- energy flow through ecosystems
- Identify the incorrect statement regarding the flow of energy between various components of the food chain.
- KCET - 2023
- Biology
- energy flow through ecosystems
- In a forest ecosystem, transfer of energy in a food chain:
A. Lion
B. Deer
C. Vulture
D. Plants
E. Fungi & bacteria
Choose the correct answer from the options given below:- CUET (PG) - 2023
- Biology
- energy flow through ecosystems
Questions Asked in NEET exam
- An oxygen cylinder of volume 30 litre has 18.20 moles of oxygen. After some oxygen is withdrawn from the cylinder, its gauge pressure drops to 11 atmospheric pressure at temperature \(27^\circ\)C. The mass of the oxygen withdrawn from the cylinder is nearly equal to: [Given, \(R = \frac{100}{12} \text{ J mol}^{-1} \text{K}^{-1}\), and molecular mass of \(O_2 = 32 \text{ g/mol}\), 1 atm pressure = \(1.01 \times 10^5 \text{ N/m}^2\)]
- NEET (UG) - 2025
- Ideal-gas equation and absolute temperature
A constant voltage of 50 V is maintained between the points A and B of the circuit shown in the figure. The current through the branch CD of the circuit is :
- NEET (UG) - 2025
- Current electricity
The output (Y) of the given logic implementation is similar to the output of an/a …………. gate.
- NEET (UG) - 2025
- Logic gates
- A parallel plate capacitor made of circular plates is being charged such that the surface charge density on its plates is increasing at a constant rate with time. The magnetic field arising due to displacement current is:
- NEET (UG) - 2025
- Displacement Current
What is Microalbuminuria ?
- NEET (UG) - 2025
- Human physiology
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.