Why was the advent of the amniotic egg so important in the evolution of terrestrial vertebrates?
A. It made internal fertilization more likely, so
it increased individual species' fitness.
B. It completely removed dependence on
water for reproduction.
C. It reinforced pre-zygotic isolating
mechanisms.
D. It increased the number of offspring an
individual female could have.
B
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Answer the following statement true (T) or false (F)
What is the relationship between age-specific mortality and age-specific survivorship?
a. age-specific mortality is the proportion of individuals alive at the start of an age interval; age-specific survivorship is the proportion that die before the start of the next interval b. age-specific survivorship is the proportion of individuals alive at the start of an age interval that die during the age interval; age-specific mortality is the proportion that survive until the start of the next interval c. the sum of age-specific mortality and age-specific survivorship always equals 1 d. the sum of age-specific mortality and age-specific survivorship always equals 1 e. age-specific survivorship is always greater than 1
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(a) paranoia (b) psychosis (c) excessive anxiety in social situations (d) bingeing and purging
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