Master NEET Zoology with topic-wise questions. Tailored for NEET students, these questions strengthen your Biology preparation.
Which of the following is NOT a characteristic typically associated with organisms that predominantly reproduce asexually?
Rapid population growth in stable environments
Adaptation to narrow ecological niches
High genetic diversity within populations
Reduced energy expenditure on mate finding
The RNA world hypothesis proposes that RNA, not DNA, was the primary genetic material in early life. Which characteristic of RNA makes it a more plausible candidate for this role compared to DNA?
Double-stranded structure
Higher stability
Catalytic activity
Presence of thymine
Protocells are considered a key step in the origin of life. Which of the following is NOT a characteristic typically associated with protocells?
Membrane-bound compartments
Simple metabolic activity
Ability to undergo fission
Developed DNA replication mechanisms
The concept of punctuated equilibrium challenges the traditional view of evolution by suggesting:
Evolution proceeds at a constant, gradual rate.
Long periods of stasis punctuated by rapid bursts of evolutionary change.
Evolutionary changes occur only in small, isolated populations.
Acquired characteristics are inherited and drive evolutionary change.
Which characteristic is LEAST likely to be found in a species exhibiting K-selection?
Long lifespan
High fecundity
Large body size
Extensive parental care
The presence of homologous structures in different species suggests:
Convergent evolution
Analogous adaptations
Shared ancestry
Independent mutations
The phenomenon where individuals with intermediate traits have higher fitness than those with extreme traits is known as:
Directional selection
Disruptive selection
Stabilizing selection
Frequency-dependent selection
Which evolutionary mechanism is most likely to lead to allopatric speciation?
Gene flow
Sympatric speciation
Geographic isolation
Polyploidy
The evolution of similar traits in distantly related species due to similar environmental pressures is known as:
Divergent evolution
Parallel evolution
Convergent evolution
Coevolution
Distinguish between adaptive radiation and convergent evolution. Which statement is TRUE?
Both adaptive radiation and convergent evolution result in homologous structures.
Adaptive radiation involves unrelated species evolving similar traits, while convergent evolution involves diversification from a common ancestor.
Adaptive radiation is driven by genetic drift, while convergent evolution is driven by natural selection.
Adaptive radiation involves diversification from a common ancestor, while convergent evolution involves unrelated species evolving similar traits.
