WorksheetsRedback Spider clicker questions
Total questions: 11
Worksheet time: 3hrs 45mins
Name
Class
Date
1.
Red-crowned cranes breed in spring and early summer. Choose a proximate explanation:
a)
A.Breeding is most likely to be successful in spring and early summer.
b)
Increasing day length triggers the release of breeding hormones
c)
Ample food is available for chicks at this time
2.
Red-crowned cranes breed in spring and early summer. Choose an ultimate explanation
a)
Breeding is most likely to be successful in spring and early summer
b)
A.Hormonal changes in the spring trigger breeding behaviors.
c)
Breeding is triggered by the effect of increased day length on the birds’ photoreceptors
3.
If the Mate Rejection hypothesis is correct, what would you predict?
a)
Females would attack males only during copulation
b)
A.Cannibalized males would be smaller and produce fewer offspring than non-cannibalized males.
c)
A.Cannibalized males would father twice as many offspring as non-cannibalized males.
4.
: If the Mistaken Prey hypothesis is correct, what would you predict?
a)
Females would sometimes attack males as soon as they enter her web
b)
A.65% of females would cannibalize their mates. ●
c)
A.Females would only attack males when they somersault to dangle in front of her jaws. ●
5.
CQ#5: If the Hungry Lover hypothesis is correct, what would you predict?
a)
Females would only eat males that somersault to dangle in front of their jaws
b)
A.Cannibalized males would be smaller and produce fewer offspring than non-cannibalized males.
c)
Females would be more likely to cannibalize males if their diet has not been supplemented
6.
Choose a proximate explanation for female cannibalism
a)
A.The female eats the male because he dangles his abdomen in front of her jaws.
b)
A.The female can produce a larger egg sac if she eats the male.
c)
A.The female gains nutrients by eating her mate.
7.
: Choose an ultimate explanation for female cannabilism
a)
A.The female eats the male because he dangles his abdomen in front of her jaws.
b)
A.The female gains nutrients from eating the male.
c)
A.The female copulates longer while eating her mate.
8.
If the Paternal Investment hypothesis is correct, what would you predict?
a)
A.Consuming the male would significantly increase the number and mass of eggs in the female’s egg sac.
b)
A.The male’s food value would be low because his mass would be only 1-2% of the mass of the female.
c)
A.Eggs in the same egg sac could be fertilized by more than one male.
9.
If the Nuptial Gift hypothesis is right, what would you predict?
a)
Non-cannibalized males would copulate longer than cannibalized males.
b)
A.Cannibalized males would father more offspring than non-cannibalized males.
c)
A.65% of females would cannibalize their mates. –
10.
Choose a proximate explanation for male self-sacrifice
a)
A.The male’s somersault is triggered when he inserts a palp in the female’s sperm receptor.
b)
The male is providing nutrients to his offspring
c)
A male that is cannibalized fathers twice as many offspring.
11.
Choose an ultimate explanation for male self-sacrifice
a)
The male increases the length of copulation by sacrificing himself
b)
A.The male’s self-sacrifice is an innate, genetically programmed behavior.
c)
A.The male is providing nutrients to his hungry mate.
100 %
