Life History Patterns

Question 1

Life History

Answer 1

a species’ lifetime pattern of growth, development, and reproduction

Question 2

Asexual reproduction

Answer 2

reproduction results in the formation of genetically identical individuals

Question 3

Sexual reproduction

Answer 3

reproduction involving the fusion of a female gamete (egg) and male gamete (sperm), which forms a zygote

Question 4

Heterogony

Answer 4

the alternation between asexual and sexual reproduction

Question 5

Hermaphroditism

Answer 5

having both male and female organs during life history

Question 6

Sequential hermaphroditism

Answer 6

occurs when the individual is born one sex and changes sex at some point in their life history

Question 7

Protandry (pro-tan-dree)

Answer 7

change from male to female (e.g. clown fish)

Question 8

Protogyny (pro-toe-guy-knee)

Answer 8

change from female to male (e.g. Gag or Black sea bass)

Question 9

Simultaneous hermaphroditism

Answer 9

occurs when the individual contains both male and female reproductive organs at the same time throughout their life history (e.g. slugs)

Question 10

Parthenogenesis

Answer 10

a form of asexual reproduction in which growth and development of embryos occur without fertilization

Question 11

Monogamy

Answer 11

is a mating system in which individuals form a lasting pair bond

Question 12

Polygamy

Answer 12

more than one mate of one sex for a single individual of the other sex

Question 13

Polygyny (poly-guy-knee)

Answer 13

polygamy in which a male has more than one female (man has more than one wife)

Question 14

Polyandry (poly-an-dree)

Answer 14

polygamy in which a female has more than one male (woman has more than one husband)

Question 15

Scramble competition polygyny

Answer 15

Males are enable to monopolize a limited resource. There is a short window of breeding and a giant free for all.

Question 16

Lek polygyny

Answer 16

Males display and gather at a courtship arena and they show off…. Female chooses a mate.

Question 17

Explosive breeding assemblages

Answer 17

sexes converge over a short synchronized breeding period (mate with whoever they can)

Question 18

Promiscuity

Answer 18

(one to one or many and no pair bound formed) implies no durable associations, mating is a matter of temporary contact (also called polygynandry)

Question 19

Semelparity

Answer 19

is to grow many years, then reproduce once before dying

Question 20

Iteroparity

Answer 20

reproductive effort is spread out over many episodes over a long lifetime