Master NEET Zoology with topic-wise questions. Tailored for NEET students, these questions strengthen your Biology preparation.
The 'hot dilute soup' proposed by Haldane and Oparin as a crucial stage in the origin of life faced a major challenge. What was this primary obstacle?
The absence of a continuous source of energy.
The presence of an oxidizing atmosphere.
The lack of a mechanism to concentrate the organic molecules to facilitate polymerization.
The instability of amino acids at high temperatures.
Which of the following best describes the significance of coacervates in the context of the origin of life?
They are fossilized evidence of the earliest life forms on Earth.
They prove that RNA was the primary genetic material in early life.
They demonstrate how membrane-bound compartments, crucial for cellular life, could have arisen spontaneously from organic molecules.
They explain the mechanism by which the first self-replicating molecules were formed.
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 observation MOST directly challenges the idea of a universally applicable “molecular clock” for dating evolutionary divergence?
Fossil evidence sometimes contradicts molecular clock estimates.
Mutation rates can be influenced by environmental factors.
Different genes evolve at different rates, even within the same lineage.
Horizontal gene transfer can introduce new genes into a lineage.
The evolutionary significance of the Burgess Shale fossils lies primarily in:
Providing evidence for the earliest forms of life on Earth.
Demonstrating a rapid diversification of body plans during the Cambrian explosion.
Showing the transition from aquatic to terrestrial life.
Illustrating the co-evolution of plants and animals.
The concept of 'adaptive radiation' is BEST exemplified by:
The evolution of antibiotic resistance in bacteria.
The development of camouflage in a prey species.
Darwin's finches on the Galapagos Islands developing diverse beak shapes for different food sources.
The gradual increase in size of a particular species over generations.
Which scenario would MOST likely lead to allopatric speciation?
Two closely related plant species hybridizing in a shared habitat.
A mutation arising in a single individual within a population.
A river changing course and dividing a population of rodents into two isolated groups.
Seasonal variations in food availability leading to different feeding behaviors within a bird species.
The phenomenon of industrial melanism in Biston betularia demonstrates which evolutionary force most directly?
Genetic drift due to a bottleneck effect
Gene flow between moth populations
Mutation creating new melanic alleles
Natural selection driven by environmental 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
