Master NEET Zoology with topic-wise questions. Tailored for NEET students, these questions strengthen your Biology preparation.
Which macromolecule is believed to have been the first genetic material?
DNA
Protein
RNA
Carbohydrate
What is the significance of coacervates in the origin of life?
They are the first true cells
They demonstrate the potential for membrane-bound structures to form spontaneously
They are self-replicating molecules
They prove that life originated in the ocean
Which gas was likely ABSENT in the early Earth's atmosphere according to the Oparin-Haldane hypothesis?
Methane ()
Ammonia ()
Water vapor ()
Oxygen ()
The evolution of which metabolic process significantly altered Earth's atmospheric composition?
Chemosynthesis
Fermentation
Photosynthesis
Respiration
Darwin's finches on the Galapagos Islands are an example of adaptive radiation. This means they:
Migrated from different locations and adapted to the same environment.
Developed similar traits due to similar environmental pressures.
Evolved from a common ancestor and diversified to fill different ecological niches.
Lost their ability to adapt over time due to limited resources.
Which of the following is a key factor driving adaptive radiation?
Lack of competition.
Stable environmental conditions.
Availability of new ecological niches.
Low mutation rates.
Adaptive radiation is characterized by:
Slow and gradual changes over long periods.
Convergence of different species towards similar traits.
Rapid diversification from a common ancestor.
Extinction of a large number of species.
The Australian marsupials are a good example of:
Convergent evolution.
Adaptive radiation.
Coevolution.
Parallel evolution.
What is the primary outcome of adaptive radiation?
Decreased biodiversity.
Increased competition.
Increased biodiversity.
Stabilization of the environment.
Which of these is NOT a likely scenario for adaptive radiation?
A newly formed volcanic island.
A stable environment with limited resources.
After a mass extinction event.
Introduction of a species to a new environment with diverse habitats.
