NEET Biology: Organisms and Population — Practice Set 10

Q1. Which of the following statements about the greenhouse effect is incorrect?

A. Greenhouse gases trap heat in Earth's atmosphere.
B. Carbon dioxide and methane are greenhouse gases.
C. The greenhouse effect causes a decrease in global temperatures.
D. Water vapor contributes to the greenhouse effect.

Q2. Which of the following is a correct statement about nutrient cycles?

A. The nitrogen cycle involves bacteria in nitrogen fixation.
B. The phosphorus cycle has a significant atmospheric component.
C. The water cycle does not include transpiration.
D. Carbon is only cycled in terrestrial ecosystems.

Q3. Which of the following is an incorrect statement about invasive species?

A. Invasive species can outcompete native species for resources.
B. They have no impact on ecosystem stability.
C. They often lack natural predators in their new habitat.
D. They can alter nutrient cycling and ecosystem functions.

Q4. Which factor is most important in determining the distribution of a species?

A. Predation pressure
B. Abiotic and biotic factors
C. Number of mutations
D. Geographical latitude

Q5. What does the term "biotic potential" refer to?

A. The maximum reproductive capacity of a species under ideal conditions
B. The number of individuals in a population
C. The rate of immigration
D. The carrying capacity of an environment

Q6. Which of the following represents a density-independent factor affecting population growth?

A. Disease
B. Predation
C. Earthquake
D. Competition

Q7. Which of the following is an example of an r-selected species?

A. Elephant
B. Human
C. Bacteria
D. Whale

Q8. Which of the following is an example of secondary succession?

A. Lichen colonizing bare rocks
B. Regrowth of a forest after a wildfire
C. Coral reef formation in deep waters
D. Bacteria colonizing a new volcanic island

Q9. Which of the following statements about carrying capacity is correct?

A. It is the maximum population size an environment can support indefinitely.
B. Populations always remain exactly at carrying capacity.
C. It is fixed and does not change with environmental conditions.
D. Exceeding carrying capacity has no impact on population stability.

Q10. Which of the following statements about biodiversity is incorrect?

A. Biodiversity includes genetic, species, and ecosystem diversity.
B. Higher biodiversity increases ecosystem resilience.
C. Biodiversity loss has no impact on ecosystem stability.
D. Conservation efforts help preserve biodiversity.

Biology — Organisms and Population

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Which of the following statements about the greenhouse effect is incorrect?

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