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Yes, ecology is important for NEET. It constitutes a significant portion of the biology syllabus and is crucial for understanding the interrelationships in ecosystems
What is the weightage of ecology in NEET?
The weightage of ecology in NEET can vary, but it typically holds a substantial share in the biology section. It's essential to allocate sufficient time to study ecology topics.
What topics are covered in ecology?
Ecology in NEET covers a range of topics, including ecosystems, biodiversity, environmental issues, population dynamics, and more. A thorough understanding of these concepts is vital for success in the exam.
Which subject is best for NEET?
The best subject for NEET depends on individual strengths and preferences. However, biology is a key subject, and a strong foundation in it is essential for medical entrance exams.
Are ecology MCQs are tough?
The difficulty of ecology MCQs in NEET can vary, but practicing a variety of questions and thoroughly understanding the concepts will help you tackle them effectively. Regular revision is key to mastering ecology for the exam.
Ecology MCQ For NEET Biology With Solutions
Check the ecology mcq for NEET Biology to ace the NEET 2024 examination. These Ecology mcqs are given along with the solutions. Solve now.
Krati Saraswat2 May, 2024
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Ecology MCQ:
Ecology, the fascinating science that unravels the intricate web of interactions between organisms and their environment, is a captivating journey into the interconnectedness of life on Earth. At its core, ecology explores how living beings adapt to their surroundings and coexist with other species in an ever-changing world.
Ecology MCQ:
Ecology delves deep into understanding the delicate balance maintained within ecosystems, where each organism plays a vital role in sustaining life as we know it.
By examining various ecological concepts such as energy flow, nutrient cycling, and population dynamics, we gain invaluable insights into nature's ingenious mechanisms that drive our planet's biodiversity.
Ecology teaches us about symbiotic relationships forged between species- mutually beneficial or parasitic- highlighting nature's remarkable ability to find harmony even amidst apparent chaos. As we explore different biomes across terrestrial and aquatic realms, we witness firsthand how diverse habitats support unique communities of organisms uniquely adapted to survive and thrive within their specific niches.
In studying ecology, we open doors to comprehend pressing environmental issues like climate change, deforestation, habitat loss, and pollution—all challenging humanity's very existence—and equip ourselves with knowledge crucial for making informed decisions toward a sustainable future for generations yet unborn.
Q 1. At the trophic level of consumers, the rate at which food energy is assimilated is called:
Secondary productivity
Gross primary productivity
Net primary productivity
None of these
Answer-
a, Secondary Productivity
Explanation:
The energy which is assimilated by the consumer level of a food chain is referred to as secondary productivity. This amount, after subtracting the energy lost through respiration and metabolic processes, is then stored in the biomass of the consumer. It subsequently forms part of the energy available to be passed on to the next trophic level. Gross primary productivity indicates all energy captured by producers via photosynthesis, while net primary productivity is what remains once plants use some of it for their growth and metabolism. Therefore, secondary productivity is your answer.
Q 2. Net primary productivity is subtracted from gross primary productivity
that which is consumed by herbivores
that which is consumed by the producer in metabolism
secondary productivity
loss due to mortality
Answer-
b, that which is consumed by the producer in metabolism
Explanation:
The correct answer is "that which is consumed by the producer in metabolism". Net primary productivity is the gross primary productivity minus the energy that was used up by producers during metabolism, and any losses due to secondary mortality. This means that the amount of energy left over in an ecosystem to be used by consumers and undergo further transformations is calculated through net primary productivity.
Q 3. In a natural ecosystem, which pyramid can never be inverted?
pyramid of numbers
pyramid of energy
pyramid of biomass
all can be inverted
Answer-
b, pyramid of energy
Explanation:
The pyramid of energy is the only one that always has a unidirectional flow in a natural ecosystem. This graphical representation illustrates the decreasing amount of energy available on each trophic level, with the most abundant supply being at the producer level. The heat released and metabolic processes caused by upward movement in the food chain cause reduced amounts of energy at higher levels, meaning that this is an immutable pattern found in all ecosystems. On the contrary, both pyramids of numbers and biomass can be inverted depending on population dynamics and accumulation of biomass in a given environment.
Q 4. The diurnal temperature of soil surface varies most in which habitat?
Forest
Desert
Grassland
Shrub land
Answer-
b, desert
Explanation:
Among the given options, the diurnal temperature of the soil surface varies most in the desert habitat. Deserts typically experience extreme temperature variations between day and night. During the day, the desert soil can become very hot due to the intense sunlight and lack of vegetation cover to provide shade. As a result, the soil surface temperature rises significantly. However, at night, the absence of cloud cover and the low humidity in deserts allow for rapid radiative cooling, causing the soil surface temperature to drop considerably. This stark contrast between the high daytime temperatures and low nighttime temperatures in deserts leads to the greatest diurnal temperature variation among the listed habitats.
Q 5. If damaging effects cease, an ecosystem that can be damaged easily will be able to recover after some time
High stability and low resilience.
Low stability and low resilience.
High stability and high resilience.
Low stability and high resilience.
Answer-
d, Low stability and high resilience.
Explanation:
An ecosystem may have low stability, yet possess high resilience. It is prone to disruption, yet can return to its original state if the damaging effects stop. Therefore, if the ecosystem can recover after a period of disturbance, it will demonstrate both low stability and high resilience.
Q 6. Every organism has a natural residence, which is:
Biome
Niche
Habit
Habitat
Answer-
d, Habitat
Explanation:
An organism's natural residence is known as a Habitat. Habitats are places where it lives and find the resources it need to survive. Different species can have different habitats, such as forests or deserts. As opposed to niches, biomes are large groups of ecosystems that share the same climate conditions. Niches are characterized by the role an organism plays in its habitat.
Q 7. Interrelationships between two organisms, one in which both benefit from the observations of the other, are called
Mutualism
Symbiosis
Parasitism
Food chain
Answer-
a, Mutualism
Explanation:
The correct answer is Mutualism. It is a type of symbiotic relationship in which two different species interact and benefit from each other. This can be seen in nature, such as when a fish cleans an alligator or a bee pollinates a flower. Mutualism can also be seen in human relationships, such as when two people form a strong bond and help each other out with tasks.
Q 8. Biotic components of an ecosystem include?
Producers, consumers, and decomposers
Producers and consumers
Producers only
Consumers only
Answer-
a, Producers, consumers, and decomposers
Explanation:
A producer uses sunlight to produce food, a consumer eats a consumer, and a decomposer breaks down dead material into nutrients that producers can use. For an ecosystem to flourish, all three components are essential.
Q 9. According to Shelford’s Law of Tolerance, the organism's wide environmental factor tolerance limit shows
Narrow distribution with low population size
Wide distribution with a high population size
Narrow distribution with a high population size
Wide distribution with low population size
Answer-
d, Wide distribution with low population size
Explanation:
Shelford's Law of Tolerance states that organisms have a wide environmental factor tolerance limit, and thus show a wide distribution with low population size. This means that species have the capacity to live in a broad range of habitats, but populations will typically be small due to a lack of resources or competition.
Q 10. Plants growing under direct sunlight are known as
Heliophytes
Sciophytes
Psamophytes
Dicots
Answer-
a, Heliophytes
Explanation:
Heliophytes are species of plants that have adapted to survive in hot and dry environments by utilizing photosynthesis to absorb energy from direct sunlight. Sciophytes, on the other hand, are species of plants that have adapted to survive in more temperate or cooler climates, usually relying on indirect light for photosynthesis. Psamophytes are species of plants that have adapted to grow near sand dunes or sandy beaches, while Dicots refer to any flowering plant that has two cotyledons (seed leaves) and an embryo with two parts.
Q 11. Plants growing under shade are known as
Psamophytes
Sciophytes
Heliophytes
Monocots
Answer-
b, Sciophytes
Explanation:
Plants growing under shade are known as Sciophytes. Sciophytes are plants adapted to living in the shadows of taller plants and trees, which means they receive less direct sunlight than heliophytes (plants growing in full sun).
Q 12. The bottom area of the pond ecosystem where production is less than respiration is :
Profundal zone
Tidal zone
Benthic zone
Limnetic zone
Answer-
c, Benthic zone
Explanation:
The correct answer is Benthic Zone. The Benthic Zone is the area of a pond or lake that contains sediment and substrate and is subject to greater pressure, making it an ideal environment for organisms adapted to living in this region. Does this zone support less production than respiration due to its lower levels of available light and nutrients.
Q 13. Which of the following is related to the Nagoya Protocol?
Pharmaceutical Industry
Biodiversity
International Finance
Organic Farming
Answer-
b, Biodiversity
Explanation:
The Nagoya Protocol is an international agreement that seeks to protect the world’s biodiversity by regulating access to genetic resources. It also focuses on providing fair and equitable sharing of benefits arising from the utilization of such resources.
Q 14. ___________is a network project of the Indian Council of Agricultural Research (ICAR) that aims to enhance the resilience of Indian agriculture to climate change through strategic research and technology demonstration.
ICMSR
ICRIST
NICRA
CDRIS
Answer-
b, NICRA
Explanation:
The correct answer is NICRA (National Innovations on Climate Resilient Agriculture). NICRA is indeed a network project of the Indian Council of Agricultural Research (ICAR). It was launched in 2011 with the objective of addressing the adverse impacts of climate change on agriculture and improving the resilience of Indian farming systems. NICRA focuses on strategic research, technology demonstration, and capacity building to promote climate-resilient agricultural practices and help farmers adapt to changing climatic conditions.
Q 15. Allelopathy is a term used to describe:
The generation of toxins by one species inhibits the development of another.
The pathogen's sporulation is inhibited by the host.
Changing the reproductive cycle of one organism by changing the reproductive cycle of another.
By suppressing reproduction, one species might stifle the expansion of another.
Answer-
a, The generation of toxins by one species inhibits the development of another.
Explanation:
Allelopathy is a term used to describe the generation of toxins by one species that inhibits the development of another species. By suppressing reproduction, one species might stifle the expansion of another.
