15 public questions tagged with this topic.
Wings of birds and bats evolved independently but serve the same function, demonstrating convergent evolution.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Adaptive Radiation and Biological Evolution
Convergent evolution refers to the development of similar traits in species with no common ancestry due to similar environmental pressures.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Adaptive Radiation and Biological Evolution
“Adaptability to various habitats and food sources” for what is the main advantage of generalist species under changing environmental conditions. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. The inference is strongest when the relevant variables, spatial boundary, and time scale are explicit. Context can alter the magnitude of an effect without changing the definition of the focal concept. The remaining alternatives—“Highly specialized diet”, “Narrow niche occupation”, “Low reproductive rate”—r
Ref: NCERT Biology Class 12, Ch. 15 Biodiversity and Conservation
“Without interspecific competition” for fundamental niches represent conditions. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Habitat describes where an organism occurs; niche additionally describes how it obtains resources and affects or responds to other organisms. Distribution therefore provides evidence about a niche but is not identical to it. The remaining alternatives—“With maximum competition”, “Always realized in nature”, “With limited resources”—refer to different states, processes, o
Ref: Ecology: Concepts and Applications, Molles, 9th Ed., Ch. 13
“Positive species interactions occur” for realized niche becomes larger than fundamental niche when. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. A niche is the multidimensional set of abiotic conditions, resources, and biotic relationships under which a population can persist. The fundamental niche reflects physiological and resource limits, while the realized niche is modified by competitors, consumers, mutualists, and dispersal barriers. The remaining alternatives—“Negative species interacti
Ref: Ecology: Concepts and Applications, Molles, 9th Ed., Ch. 13
“Interspecific interactions” for realized niche changes primarily due to. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Niche differentiation reduces overlap by separating species along resource, space, or time axes. Such partitioning can stabilize coexistence when each species performs relatively better under the conditions it uses most strongly. The remaining alternatives—“Genetic variation”, “Abiotic conditions alone”, “Population growth rate”—refer to different states, processes, or scales a
Ref: Ecology: Concepts and Applications, Molles, 9th Ed., Ch. 13
“Have broad dietary preferences” for generalist species usually. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Niche differentiation reduces overlap by separating species along resource, space, or time axes. Such partitioning can stabilize coexistence when each species performs relatively better under the conditions it uses most strongly. The remaining alternatives—“Occupy narrow habitats”, “Exploit fewer resources”, “Show limited environmental tolerance”—refer to different states, processes, or
Ref: Ecology: Concepts and Applications, Molles, 9th Ed., Ch. 13
“Positive interactions with other species” for realized niche can be larger than fundamental niche under conditions of. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. A niche is the multidimensional set of abiotic conditions, resources, and biotic relationships under which a population can persist. The fundamental niche reflects physiological and resource limits, while the realized niche is modified by competitors, consumers, mutualists, and dispersal barriers. The remaining alternatives—“Negativ
Ref: Ecology: Concepts and Applications, Molles, 9th Ed., Ch. 13
“Lizards and frogs” for a good example of niche change during an individual's lifetime is. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Habitat describes where an organism occurs; niche additionally describes how it obtains resources and affects or responds to other organisms. Distribution therefore provides evidence about a niche but is not identical to it. The remaining alternatives—“Birds”, “Humans”, “Trees”—refer to different states, processes, or scales and therefore do not express the sam
Ref: Ecology: Concepts and Applications, Molles, 9th Ed., Ch. 13
“High phenotypic plasticity” for success of invasive species depends on. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Effective control reduces propagule pressure or population growth without causing unacceptable non-target effects. Repeated monitoring is necessary because seed banks, dormant stages, recolonization, and density-dependent compensation can reverse short-term gains. The remaining alternatives—“Specialized needs”, “Low competitive ability”, “Limited dispersal”—refer to different st
Ref: Ecology: From Individuals to Ecosystems, Begon et al., 5th Ed., Ch. 21
“Reduced interspecific competition” for niche differentiation outcome of. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. A niche is the multidimensional set of abiotic conditions, resources, and biotic relationships under which a population can persist. The fundamental niche reflects physiological and resource limits, while the realized niche is modified by competitors, consumers, mutualists, and dispersal barriers. The remaining alternatives—“Increased resources”, “Complete overlap”, “No resourc
Ref: Ecology: Concepts and Applications, Molles, 9th Ed., Ch. 13
“Galápagos finches” for character displacement example observed in. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Habitat describes where an organism occurs; niche additionally describes how it obtains resources and affects or responds to other organisms. Distribution therefore provides evidence about a niche but is not identical to it. The remaining alternatives—“Warblers”, “Spiny mice”, “Paramecium”—refer to different states, processes, or scales and therefore do not express the same causal re
Ref: Ecology: Concepts and Applications, Molles, 9th Ed., Ch. 13
