Home Subjects NEET Zoology

NEET Zoology

Zoology questions for NEET UG — Animal Kingdom, Human Physiology, Genetics, Evolution.

540 Q 6 Topics Take Test
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Difficulty: All Easy Medium Hard 81–90 of 540
Topics in NEET Zoology
In the Western Ghats biodiversity hotspot, what percentage of plant species are endemic to India?
A Approximately 30%
B Approximately 60%
C Approximately 80%
D Approximately 95%
Correct Answer:  B. Approximately 60%
EXPLANATION

The Western Ghats contains about 60% endemic plant species, making it one of India's most critical biodiversity areas.

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Which of the following organisms would have the shortest lifespan in a temperate forest ecosystem?
A Decomposer bacteria
B Oak tree
C Deer
D Hawk
Correct Answer:  A. Decomposer bacteria
EXPLANATION

Decomposer bacteria have generation times measured in hours to days, making them have the shortest lifespan compared to other organisms in the ecosystem.

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In the context of India's National Action Plan on Climate Change, which sector is projected to face the most severe water stress by 2050?
A Industrial sector
B Agricultural sector
C Power generation
D Urban domestic use
Correct Answer:  B. Agricultural sector
EXPLANATION

Agriculture accounts for ~70% of water use in India and will face severe stress due to changing precipitation patterns and increased evapotranspiration.

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Which of the following best explains the concept of ecological resilience?
A The ability of an ecosystem to resist change
B The ability of an ecosystem to return to its original state after disturbance
C The biodiversity present in an ecosystem
D The productivity of an ecosystem
Correct Answer:  B. The ability of an ecosystem to return to its original state after disturbance
EXPLANATION

Ecological resilience is the capacity to recover from disturbances and return to equilibrium state.

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Which of the following would be the most effective long-term solution for controlling invasive species in Indian wetlands?
A Chemical pesticides
B Biological control using natural predators
C Physical removal only
D Importing competing species
Correct Answer:  B. Biological control using natural predators
EXPLANATION

Biological control using natural enemies provides sustainable, long-term management without ecological disruption.

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Which of the following is an example of resource partitioning in nature?
A Lions and tigers hunting the same prey
B Different bird species feeding at different tree heights in forests
C Wolves competing for the same territory
D All plants competing for the same water source
Correct Answer:  B. Different bird species feeding at different tree heights in forests
EXPLANATION

Resource partitioning reduces competition by allowing species to utilize different niches (feeding at different heights).

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In India's Sundarbans, the Bengal tiger population is threatened primarily by habitat loss due to:
A Excessive hunting
B Sea level rise and human settlement expansion
C Disease outbreaks
D Decreased prey availability
Correct Answer:  B. Sea level rise and human settlement expansion
EXPLANATION

Sundarbans face threats from climate change-induced sea level rise and human encroachment, reducing tiger habitat.

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Which mechanism would best explain the survival of antibiotic-resistant bacteria in hospital environments?
A Lamarckian inheritance
B Natural selection
C Artificial selection
D Genetic drift
Correct Answer:  B. Natural selection
EXPLANATION

Antibiotic-resistant strains survive and proliferate while susceptible strains are eliminated, exemplifying natural selection.

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Which of the following statements about ecological pyramids is correct?
A Pyramids of energy can never be inverted
B Pyramids of biomass are always upright
C Pyramids of numbers always show more individuals at lower trophic levels
D Energy pyramid represents the most accurate trophic relationship
Correct Answer:  D. Energy pyramid represents the most accurate trophic relationship
EXPLANATION

Energy pyramids always show decreasing energy upward and cannot be inverted, making them the most reliable representation.

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In a pyramid of numbers, why would an inverted pyramid occur in certain ecosystems?
A When producers are larger than consumers
B When there are more carnivores than herbivores
C When parasites outnumber their hosts
D When decomposers dominate the ecosystem
Correct Answer:  A. When producers are larger than consumers
EXPLANATION

Inverted pyramids occur when individual organisms at lower trophic levels are larger (e.g., one tree supporting many insects).

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