Prepare for NEET with Botany-specific practice questions. Covering all major Botany chapters, this is perfect for your NEET Biology needs.
Viruses exhibit characteristics of both living and non-living entities. Which of the following properties of viruses MOST strongly supports the argument AGAINST their classification as living organisms?
Presence of genetic material (DNA or RNA)
Ability to evolve and adapt to their environment
Inability to reproduce independently outside a host cell
Specific interaction with host cells
Imagine a synthetic life form created in a lab that uses a novel information storage molecule distinct from DNA or RNA, but still exhibits heritability and undergoes evolution. Which of the following aspects of the current definition of life would MOST require reconsideration in light of this discovery?
The requirement for cellular structure
The dependence on carbon-based chemistry
The specific molecular basis of heredity
The ability to respond to environmental stimuli
While classifying organisms, which of the following presents the biggest challenge to a strictly phylogenetic system of classification?
Convergent evolution
Horizontal gene transfer
Fossil record incompleteness
Morphological similarities in unrelated species
In a hypothetical plant species, the inflorescence exhibits a unique combination of features: a condensed cymose head surrounded by an involucre of brightly colored bracts that mimic petals. The individual flowers within the head are inconspicuous. Which existing inflorescence type does this MOST closely resemble, and what evolutionary advantage might this unique structure offer?
Cyathium; protection from herbivores
Hypanthodium; trap for pollinators
Capitulum; enhanced pollinator attraction
Verticillaster; increased seed dispersal
The polyphyletic grouping of organisms is based on:
Shared ancestral characteristics.
Homologous characteristics derived from a common ancestor.
Analogous characteristics due to convergent evolution.
A combination of ancestral and derived characteristics.
The heterosporous nature of Selaginella is considered an evolutionary advancement because it:
Leads to the development of seeds
Increases the number of spores produced
Allows for asexual reproduction
Simplifies the gametophyte generation
Which of these characteristics is NOT associated with the evolution of heterospory in pteridophytes?
Reduction in the number of megaspores
Increased protection of the female gametophyte
Development of endosporic gametophytes
Increased dependence on water for fertilization
The development of the zygote into a young embryo within the female gametophyte is a characteristic of:
Seed plants
Seedless vascular plants
Bryophytes
Green algae
Which of the following is NOT a potential evolutionary advantage of apomixis?
Increased genetic diversity within populations
Faster colonization of new habitats
Maintenance of advantageous genotypes in unstable environments
Reduced reliance on pollinators
Which of the following statements BEST explains why double fertilization is advantageous for angiosperms?
It ensures the formation of a triploid endosperm, which is more resistant to pathogens.
It allows for the production of both seeds and fruits, enhancing dispersal.
It synchronizes endosperm development with embryo development, preventing wasted resources if fertilization fails.
It eliminates the need for separate male and female gametophytes.
