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
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.
Which of the following combinations of reproductive strategies is LEAST likely to be observed in a single organism?
Binary fission and budding
Fragmentation and regeneration
Fragmentation and parthenogenesis
Budding and gemmule formation
A researcher observes a unicellular organism reproducing asexually. The daughter cells are genetically identical except for a few minor variations. Which mechanism is MOST likely responsible for these variations?
Crossing over during mitosis
Independent assortment of chromosomes
Random mutations during DNA replication
Conjugation with another individual
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
The Miller-Urey experiment attempted to simulate early Earth conditions to test the chemical origin of life. Which of the following gaseous components was NOT included in their experimental setup, despite being potentially present in the early atmosphere?
Methane ()
Ammonia ()
Water vapor ()
Oxygen ()
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
Which of the following is a critical argument against the theory of panspermia related to the origin of life on Earth?
Meteorites have been found to contain organic molecules.
Life on Earth shares a common genetic code.
Microbial life has been found in extreme environments on Earth.
The harsh conditions of space, including radiation and extreme temperatures, would likely destroy any known life forms during interstellar travel.
