Everyday Science
Everyday Science MCQs With Answers
741 Everyday Science MCQs for CSS, PPSC, FPSC, NTS and entry-test preparation. Take a scored quiz instead →
What agricultural practice involves growing different types of crops in a planned sequence on the same land across different growing seasons?
AOvergrazing
BCrop rotation
CMonoculture
DDeforestation
What term describes the roughly 24-hour internal biological clock that regulates the natural cycle of sleepiness and wakefulness in humans?
ACircadian rhythm
BMetabolic rate
CHomeostasis only
DReflex arc
What is the term for the transfer of pollen from the male part of a flower to the female part, enabling fertilization and seed production?
APhotosynthesis
BTranspiration
CPollination
DGermination
Which hormone, produced by the pineal gland, plays a key role in regulating the sleep-wake cycle and is often associated with promoting sleepiness?
AInsulin
BAdrenaline
CThyroxine
DMelatonin
What is the key difference between cross-pollination and self-pollination in flowering plants?
ACross-pollination occurs within the same individual flower, while self-pollination involves two different plants
BThere is no meaningful difference between the two processes
CSelf-pollination only occurs in animals, never in plants
DCross-pollination involves pollen transfer between different plants, while self-pollination occurs within the same flower or plant
REM sleep, one of the distinct stages of the human sleep cycle, is most closely associated with which activity?
AComplete muscle paralysis with no brain activity at all
BVivid dreaming
CThe very first few minutes of falling asleep only
DThe deepest, most difficult stage of sleep to wake from
What term describes the various methods, such as wind, water, or animals, by which plants spread their seeds away from the parent plant?
APhotosynthesis
BGermination
CPollination
DSeed dispersal
What is the general difference between short-term memory and long-term memory in the human brain?
AShort-term memory holds information indefinitely, while long-term memory fades within seconds
BShort-term memory holds a limited amount of information briefly, while long-term memory can store information for extended periods, potentially a lifetime
CThere is no meaningful difference between the two types
DLong-term memory only applies to physical skills, never facts
What term describes the process by which a seed develops and begins growing into a new, young plant?
AFertilization
BGermination
CTranspiration
DPollination