Question 3

   Question: Who is known as the father of Ecology in India?

   Options: 

    A. Ram Udar

    B. Birbal Sahni

    C. S.R. Kashyap

    D. Ramdeo Misra

   Correct Answer: D

   Year: NEET 2025

   Solution: Ramdeo Misra is known as the father of Ecology in India.

   Step Solution:

    1. Identify the context as the history of biological sciences in India.

    2. Recall specific contributors to ecological research.

    3. Match the name Ramdeo Misra with the foundational establishment of ecology in the country.

   Difficulty Level: Easy

   Concept Name: History of Indian Ecology

   Short cut solution: Factual memory based on NCERT introductory ecology section.

Question 27

   Question: Niche is

   Options: 

    A. All the biological factors in the organism’s environment

    B. The physical space where an organism lives

    C. The functional role played by the organism where it lives

    D. The range of temperature that the organism needs to live

   Correct Answer: C

   Year: NEET 2018

   Solution: Ecological niche was termed by J. Grinnell. It refers to the functional role played by the organism where it lives.

   Step Solution:

    1. Define the term 'Niche' as distinct from 'Habitat'.

    2. Understand that habitat is the "address," while niche is the "profession."

    3. Identify that "functional role" describes how an organism uses resources and interacts with its environment.

   Difficulty Level: Easy

   Concept Name: Ecological Niche

   Short cut solution: Niche = Role/Profession.

Question 33

   Question: The term ecosystem was coined by :

   Options: 

    A. E. Warming

    B. E.P.Odum

    C. A.G. Tansley

    D. E. Haeckel

   Correct Answer: C

   Year: NEET 2016 P1

   Solution: The term ecosystem was coined by A.G. Tansley.

   Step Solution:

    1. Review the origins of ecological terminology.

    2. Identify A.G. Tansley as the scientist who proposed the term in 1935.

   Difficulty Level: Easy

   Concept Name: Ecosystem Terminology

   Short cut solution: Ecosystem $\rightarrow$ Tansley.

Question 38

   Question: Vertical distribution of different species occupying different levels in a biotic community is known as:

   Options: 

    A. Stratification

    B. Zonation

    C. Pyramid

    D. Divergence

   Correct Answer: A

   Year: NEET 2015 C

   Solution: Vertical distribution of different species occupying different levels in a biotic community is known as Stratification.

   Step Solution:

    1. Observe the physical structure of a forest or pond.

    2. Note the layering (e.g., trees at the top, shrubs in the middle, herbs at the bottom).

    3. Recognize this vertical arrangement as stratification.

   Difficulty Level: Easy

   Concept Name: Stratification

   Short cut solution: Vertical layers = Stratification.

Question 54

   Question: Which one of the following is not a functional unit of an ecosystem?

   Options: 

    A. Energy flow

    B. Decomposition

    C. Productivity

    D. Stratification

   Correct Answer: D

   Year: 2012

   Solution: Four important functional aspects of the ecosystem are productivity, decomposition, energy flow and nutrient cycling. Stratification is a structural aspect.

   Step Solution:

    1. List the four main functional components: Productivity, Decomposition, Energy flow, and Nutrient cycling.

    2. Compare the given options to this list.

    3. Identify "Stratification" as a physical/structural characteristic, not a process.

   Difficulty Level: Medium

   Concept Name: Ecosystem Structure vs. Function

   Short cut solution: Functional units = P.D.E.N. (Productivity, Decomposition, Energy flow, Nutrient cycling).

Question 76

   Question: An ecosystem which can be easily damaged but can recover after some time if damaging effect stops will be having

   Options: 

    A. low stability and high resilience

    B. high stability and low resilience

    C. low stability and low resilience

    D. high stability and high resilience.

   Correct Answer: A

   Year: 2004

   Solution: Stability is the power to resist change (unfavourable factors). Resilience is the capability of regaining the original state after being deformed. An ecosystem that is easily damaged has low stability but high resilience if it recovers.

   Step Solution:

    1. Define 'Stability' as the ability to resist being damaged.

    2. Define 'Resilience' as the ability to bounce back/recover after damage.

    3. "Easily damaged" implies Low Stability.

    4. "Can recover" implies High Resilience.

   Difficulty Level: Medium

   Concept Name: Stability and Resilience

   Short cut solution: Damage = Stability; Recovery = Resilience.

Question 98

   Question: What is true of an ecosystem?

   Options: 

    A. Primary consumers are least dependent upon producers.

    B. Primary consumers out-number producers.

    C. Producers are more than primary consumers.

    D. Secondary consumers are the largest and most powerful.

   Correct Answer: C

   Year: 1988

   Solution: In a true ecosystem, producers are more than consumers (herbivores and carnivores) to ensure stability and energy support.

   Step Solution:

    1. Analyze the trophic structure of an ecosystem.

    2. Recall that energy is lost at each level (10% law).

    3. To support higher levels, the lower level (producers) must have higher numbers/biomass.

    4. Conclude that producers outnumber primary consumers in a stable system.

   Difficulty Level: Easy

   Concept Name: Ecosystem Trophic Structure

   Short cut solution: Base level (Producers) must be greater than Consumer levels.