In the nitrogen cycle, which organism is responsible for nitrogen fixation in terrestrial ecosystems?
Q.82Easy
Which type of biome receives the least amount of annual rainfall globally?
Q.83Medium
The Western Ghats of India represent which type of biodiversity hotspot characteristic?
Q.84Medium
Which of the following is an example of competitive exclusion principle in natural ecosystems?
Q.85Medium
Which nutrient cycle is considered abiotic and does NOT involve bacterial decomposition?
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Q.86Medium
In India's forest ecosystems, which of the following is considered a keystone species?
Q.87Medium
Which of the following statements about biodiversity loss in India is CORRECT?
Q.88Medium
The process of ecological pyramids is used to represent energy flow. Which type of pyramid is ALWAYS upright in shape?
Q.89Medium
Which mechanism of natural selection would favor the evolution of antibiotic resistance in bacteria?
Q.90Medium
In the context of India's Protected Area network, which conservation strategy aims to maintain ecological processes and genetic diversity while allowing sustainable use?
Q.91Medium
Which of the following is NOT a characteristic of r-selected species?
Q.92Medium
Which of the following would represent a density-independent limiting factor in an ecosystem?
Q.93Hard
In India's coral reef ecosystems, which anthropogenic factor poses the greatest threat to coral bleaching?
Q.94Hard
Which of the following ecological concepts explains why small isolated populations are more vulnerable to extinction?
Q.95Hard
The concept of ecosystem services refers to the benefits humans obtain from ecosystems. Which of the following is classified as a REGULATING service?
Q.96Hard
Which succession model proposes that early colonizing species modify the environment to facilitate or inhibit later species establishment?
Q.97Hard
In the context of India's monsoon-dependent ecosystems, which adaptive strategy is most evident in deciduous forest species?
Q.98Medium
A population of deer in a forest reserve shows an increase from 500 to 2000 individuals over 5 years despite constant food availability. Which of the following best explains this population growth pattern?
Q.99Easy
Which of the following statements about energy flow in an aquatic ecosystem is correct?
Q.100Hard
In India's Western Ghats, the introduction of invasive species like Lantana camara has led to reduced native plant diversity and altered nutrient cycling. This phenomenon best demonstrates which ecological principle?
