NEET Zoology - MCQ Practice Questions

The concept of ecological niche differs from habitat in that niche refers to:

Biofertilizers containing nitrogen-fixing bacteria (like Rhizobium) increase soil fertility primarily by:

Which of the following organisms would show the highest concentration of pesticide residues in an aquatic food chain?

According to the 10% law of energy transfer, if primary producers in an ecosystem contain 10,000 kcal of energy, how much energy would be available to secondary consumers?

Which succession type would occur on bare rock in the Western Ghats with no previous soil?

In India's Western Coastal regions, which of the following represents a keystone species in mangrove ecosystems?

Which of the following is NOT a density-dependent factor affecting population growth?

In the carbon cycle, which process is primarily responsible for returning carbon dioxide to the atmosphere in terrestrial ecosystems?

Which mechanism would best explain the survival of antibiotic-resistant bacteria in hospital environments?

In India's Sundarbans, the Bengal tiger population is threatened primarily by habitat loss due to:

Which of the following is an example of resource partitioning in nature?

Which of the following best explains the concept of ecological resilience?

In the Western Ghats biodiversity hotspot, what percentage of plant species are endemic to India?

According to India's National Green Tribunal (NGT) 2024 decisions, which industrial effluent poses the greatest threat to the Yamuna River ecosystem?

In a forest biome, if 1000 kg of plant biomass is available at the producer level, approximately how much energy would be available at the secondary consumer level (assuming 10% energy transfer)?

In India's coral reef ecosystems, what is the primary cause of coral bleaching observed in the Andaman and Nicobar Islands since 2020?

Which statement about India's Project Tiger is most accurate?

In the bioaccumulation of DDT pesticide in aquatic food chains, which organism typically shows the highest concentration?

Which of the following represents a density-dependent factor in the Indian subcontinent ecosystems?

In India's mangrove ecosystems, which species serves as the keystone species maintaining ecosystem structure?