complex life cycles

Question 1

simple life cycles:

Answer 1

a series of changes in form that an organism undergoes, returning to its starting state

Question 2

complex life cycle

Answer 2

involve an abrupt developmental change in an individual’s morphology, physiology, and behavior

Question 3

change in form is usually associated with a change in ___ , which reduces competition between larvae and adults for food and space

Answer 3

habitat

Question 4

toxoplasma gondii

Answer 4

-single-celled eukaryote
-intracellular parasite
-capable of infecting all warm animals

Question 5

toxoplasma gondii can reproduce…

Answer 5

sexually and asexually

Question 6

toxoplasma gondii sexual reproduction

Answer 6

only in cats

Question 7

toxoplasma gondii asexual reproduction

Answer 7

only in virtually all warm blooded animals

Question 8

T. gondii exists in three forms

Answer 8

-oocysts, tachyzoites, and bradyzoites

Question 9

oocytes are only produced in cats when passed in ___ and ingested

Answer 9

feces

Question 10

parasite manipulation hypothesis

Answer 10

some parasites have evolved mechanisms to influence their hosts to promote the parasites transmissions

Question 11

altruistic behavior

Answer 11

any behavior that reduces an individual animals relative fitness but increases the fitness of other individuals in a population

Question 12

fitness through producing offspring and providing aid that allows relatives to spread shared genes

Answer 12

inclusive fitness

Question 13

inclusive fitness theory

Answer 13

average fitness of an allele includes both its effect on the fitness of an individual and its contribution to fitness of close relatives

Question 14

dictyostelid life cycle represents

Answer 14

altruisms

Question 15

after oocysts are ingested, they develop into ____ which rapidly divide

Answer 15

tachyzoites

Question 16

what happens before tachyzoites develop into cysts or bradyzoites?

Answer 16

the tachyzoites localize to muscle tissue and the central nervous system

Question 17

bradyzoites transform back into ___ upon entering a new host

Answer 17

tachyzoites

Question 18

what does the inclusive fitness theory support

Answer 18

it supports the reproductive success of relative’s offspring and the passing of part of their genes