Ecology - Organisms & Population Questions and Answers

16 To attract a mate male frogs produce loud croaking calls with longer and more frequent calls being more attractive to females This is an example of a intrasexual selection b intersexual selection c disruptive selection d balancing selection 17 Which conditions would be most likely to produce sexual dimorphism between males and females of a species a Resources in the area are scarce b Intersexual selection is not strong c The male and female raise their young together d The female raises her young alone

6 Which of the following criteria are required for natural selection to occur SELECT ALL THAT APPLY 4 points a Competition for resources b Gene flow c Heritable traits d Differential reproductive success e Reproductive isolation f Punctuated equilibrium g Trait variation

15 Which is not a cause of loss of biodiversity a deforestation b invasive species c overharvesting d pollution e all are causes 16 Invasive species are introduced into new environments by which method a wind b pollination c human activity d wind and human activity e pollination wind and human activity 17 Which of the following can result from human activity a a decrease in the carrying capacity of Earth for humans b an increase in the carrying capacity of Earth for humans c an effect on the carrying capacity of Earth for other organisms d both a and b h and care true

3 How does age structure influence population growth 2 marks

1 What characteristics do humans have that classify them as K selected 3 marks

Which factor describes a population with few individuals making it very susceptible to genetic drift A non random mating B migration C small populations D natural selection

What does Continuous variation caused by multiple genes most tend to look like O A clearly divided population where some individuals have the phenoytype and the remainder do not have any manifestation of the O A Bell Curve shaped continuous distribution with some individuals having low or high levels of the phenotype but the majority sho OA thee way split of the population where some individuals lack the phenotype completely say1 4 of the population some indivi population and some individuals show twice the amount of phenotype shown in the mid level individuals say 1 4 of the populat alloles this is the general distribution barring the significant impact of those factors

Northern spotted owls and Mexican spotted owls are the same species separated geographically by distance and mountain ranges They have developed different traits over time How could this affect biodiversity OA If they become separate species biodiversity will decrease B Biodiversity will decrease because they have become isolated from each other C Biodiversity will increase because their populations have declined O D If they become separate species biodiversity will increase

How does microevolution occur

1 point plementary goods If the price of sunscreen increases ceteris paribus O the income of consumers will decrease O the quantity demanded of beach towels will decrease for every possible price O the quantity demanded of beach towels will increase for every possible price the income of consumers will increase

H 40 100 50 75 Weekly spending on groceries T 25 60 80 What percentage of the data is between 40 and 90 100 120 140 1

40 O 75 50 O 100 Weekly spending on groceries 25 60 What percentage of the data is between 90 and 140 80 100 120 1 1 140

Students are looking at the temperature differences over the months of January Feruary March and April What would be the best graph to represent this data bar graph line graph histogram pie graph

Use the figure to answer the following question Canada goose Artery Vein 35 C 133 27 30 20 10 2 18 9 To From foot foot The thin horizontal arrows in the figure above show that the warmer arterial blood can bypass the legs as needed when the legs are too cold to function well warmer venous blood transfers heat to the cooler arterial blood arterial blood is always cooler in the abdomen compared to the temperature of the venous blood in the feet of the goose warmer arterial blood transfers heat to the cooler venous blood

Which of the following is are the density dependent factor that limits the population growth 1 Tornado destroying a stand of pine trees II Disease passing through a population of pigs on a farm III Snowy owls preying on arctic hares OI and III O I and II O II and III OI II and III

The energy available to the plant from the Sun is 30 000 kcal What would be the energy available to the lion in the food chain Sun Grass Producer O 30 kcal 300 kcal O 3000 kcal 30000 kcal Deer Herbivore Lion Carnivore