Master NEET Zoology with topic-wise questions. Tailored for NEET students, these questions strengthen your Biology preparation.
In a plant species that reproduces through apomixis, a mutation arises in a somatic cell that confers resistance to a fungal pathogen. What is the likelihood that this resistance trait will be passed on to the offspring?
Low, as somatic mutations are rarely heritable.
High, as apomixis bypasses meiosis and fertilization.
Dependent on whether the mutation is dominant or recessive.
Zero, as apomixis only involves the maternal gametophyte.
Certain plants can reproduce both sexually and asexually. Under which of the following environmental conditions would asexual reproduction be MOST advantageous?
Unstable environment with frequent disturbances
Environment with high pathogen pressure
Environment with limited resources and high competition
Stable environment with abundant resources
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 '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 factor is the LEAST likely to contribute to allopatric speciation?
Geographic isolation
Different selective pressures in separated environments
Genetic drift in small, isolated populations
Extensive gene flow between populations
A small, isolated island population of finches experiences a drastic reduction in population size due to a volcanic eruption. The surviving finches have a different average beak size compared to the original population. This change is primarily attributed to:
Directional selection
Founder effect
Bottleneck effect
Disruptive selection
