Civil Superior Services — Complete MCQ Bank
CSS is Pakistan’s premier federal competitive examination. Strong preparation requires conceptual clarity, broad general knowledge and consistent practice across compulsory and optional areas.
What is the process by which organisms survive extreme heat and drought by entering a dormant state?
What is the broadest level of biological classification?
What is the two-part Latin naming system for organisms called?
What is the term for the gradual process of change in the species composition of an ecosystem over time?
Which type of ecological succession begins on bare rock or sand where no soil exists?
What is the term for the variety of different species present in a given habitat?
What is the function of lysosomes in animal cells?
What is the process by which cells engulf large particles by wrapping the cell membrane around them?
Which molecule is the primary energy currency of cells?
What is the term for two different alleles for a trait in an organism?