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Questions and Answers List

level questions: Level 1

Question	Answer
Reproductive success of an organism is best measured by its	number of offspring that survive to reproduce
A trade-off for having many offspring would be	that they would likely be small in size
Members of the California sheephead fish species begin their life as females and then become males. This is referred to as	sequential hermaphroditism
Successful reproduction can result in a	lower chance of future reproduction
The behavioural, physiological, and energetic activities involved in current reproduction result in	reduced future survival, fecundity, and growth
Early sexual maturity is predicted to result in	higher reproduction earlier in life
In long-lived species of organisms, the primary advantage of delaying reproduction (late maturity) is	larger initial body size during the first reproduction event
An animal with high fecundity is predicted to have	a lower survival rate
Guppies were moved from stream A, with a fish that preyed upon adult guppies, to stream B, with a fish that preyed upon juvenile guppies. After 30 to 60 generations, the guppies responded to the increased predation on juveniles relative to adults by	increasing age at maturity
Altricial young are relatively	helpless at birth and require relatively little time for incubation and gestation (inkubation af æg og drægtighed) (In biology, altricial species are those in which the young are underdeveloped at the time of birth, but with the aid of their parents develop in spurts after birth). Modsat: Præocociale er arter, hvor de unge er relativt modne og bevægelige fra fødsels- eller klekkingsøjeblikket.
Pacific salmon migrate upstream and after breeding, soon die. They are termed? Hvad er det andet alternativ?	semelparous. For at maksimere fitness, afbalancerer en organisme øjeblikkeligt reproduktionsindsatser mod fremtidige udsigter. Et alternativ, semelparity, er investering af maksimal energi i en enkelt reproduktionsindsats. Det andet alternativ, iteroparitet, er placeringen af mindre energi til gentagne reproduktionsindsatser.
The preferential selection by a female of a male peacock with the longest tail feathers and the most eyespots on the tail feathers is an example of	intersexual selection
Heightened male to male aggression around female mates is likely the result of	intrasexual selection
Which of the following would be most attractive to a female hummingbird? A mate protecting a territory with many other males, many predators, many nectar feeding animals or many nectar bearing flowers?	many nectar bearing flowers