Entrance Exams
Govt. Exams
Bioaccumulation and biomagnification increase at higher trophic levels. Top predators accumulate the highest pesticide concentrations.
Rhizobium bacteria form symbiotic relationships with legume roots, fixing atmospheric nitrogen into ammonia and nitrates usable by plants.
While habitat is 'where' an organism lives, niche describes 'how' it lives—its function, food preferences, behavioral patterns, and ecological role.
Habitat fragmentation is predominantly caused by human activities like agricultural development, construction, and urban sprawl, dividing continuous ecosystems into isolated patches.
Carrying capacity is the maximum population size an environment can sustain indefinitely, determined by food, water, space, and other limiting factors.
The Western Ghats are designated as a hotspot due to exceptional plant and animal endemism, with thousands of species found nowhere else on Earth.
Nutrient overloading from agricultural runoff causes algal blooms and oxygen depletion, directly causing eutrophication.
Predator populations increase after prey abundance increases, creating characteristic cyclic patterns with a temporal delay between the two population peaks.
Both the fungus and plant benefit: fungi gain carbohydrates while helping the plant absorb water and minerals, making it a mutualistic relationship.
Secondary succession occurs on previously colonized areas where soil remains intact, such as after a fire. Primary succession occurs on bare rock or new land.