Home Subjects NEET Zoology Ecology & Environment

NEET Zoology
Ecology & Environment

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

27 Q 6 Topics Take Mock Test
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Difficulty: All Easy Medium Hard 21–27 of 27
Topics in NEET Zoology
In a pond ecosystem, phytoplankton occupy which trophic level?
A Primary consumers
B Primary producers
C Secondary consumers
D Decomposers
Correct Answer:  B. Primary producers
EXPLANATION

Phytoplankton are autotrophic organisms that produce their own food through photosynthesis, making them primary producers in aquatic ecosystems.

Test
Which of the following is NOT a renewable resource?
A Solar energy
B Wind energy
C Coal
D Geothermal energy
Correct Answer:  C. Coal
EXPLANATION

Coal is a non-renewable fossil fuel formed over millions of years. Solar, wind, and geothermal are renewable resources.

Test
What is the process by which plants release water vapor through their leaves?
A Respiration
B Transpiration
C Evaporation
D Condensation
Correct Answer:  B. Transpiration
EXPLANATION

Transpiration is the release of water vapor by plants through stomata in leaves. Evaporation refers to water bodies.

Test
Which gas is primarily responsible for the greenhouse effect in the atmosphere?
A Nitrogen
B Oxygen
C Carbon dioxide
D Argon
Correct Answer:  C. Carbon dioxide
EXPLANATION

CO₂ is the major anthropogenic greenhouse gas, comprising about 76% of total greenhouse gas emissions, contributing significantly to global warming.

Test
Which type of succession occurs on a newly formed volcanic island?
A Secondary succession
B Primary succession
C Tertiary succession
D Cyclical succession
Correct Answer:  B. Primary succession
EXPLANATION

Primary succession occurs on bare, newly exposed surfaces with no pre-existing soil or organisms, such as volcanic islands.

Test
What is the primary source of energy in most ecosystems?
A Decomposers
B Consumers
C Solar radiation
D Geothermal energy
Correct Answer:  C. Solar radiation
EXPLANATION

Solar radiation captured by photosynthetic organisms is the primary energy source for almost all ecosystems on Earth.

Test
Which of the following is a biotic component of an ecosystem?
A Soil
B Decomposers
C Water
D Temperature
Correct Answer:  B. Decomposers
EXPLANATION

Decomposers are living organisms that break down dead matter, making them biotic components. Soil, water, and temperature are abiotic components.

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