Chapter 10: Life History

Question 1

Development of an individual from an egg that did not undergo fertilization

Answer 1

Parthenogenesis

Question 2

Having male and female reproductive organs on separate plants

Answer 2

Dioecious

Question 3

Organism possessing the reproductive organs of both sexes

Answer 3

Hermaphrodite

Question 4

An individual organism that possesses both male and female sex organs at the same time in its life cycle

Answer 4

Simultaneous hermaphrodite

Question 5

An individual organism that changes sex from female to male or male to female at some time in its life cycle

Answer 5

Sequential hermaphrodite

Question 6

Having male and female reproductive organs separated in different floral structures on the same plant

Answer 6

Monoecious

Question 7

In animals, mating and maintenance of a pair bond with only one member of the opposite sex at a time

Answer 7

Monogamy

Question 8

Member of one sex mates with more than one member of the opposite sex, and the relationship terminates after mating

Answer 8

Promiscuity

Question 9

Acquisition by an individual of two or more mates, none of which is mated to other individuals

Answer 9

Polygamy

Question 10

Mating of one female with several males

Answer 10

Polyandry

Question 11

Mating of one male with several females

Answer 11

Polygyny

Question 12

Competition among members of the same sex for a mate

Most common among males and characterized by fighting and display

Answer 12

Intrasexual selection

Question 13

Choice of a mate, usually by the female

Answer 13

Intersexual selection

Question 14

Proportion of its resources an organism expends on reproduction

Answer 14

Reproductive effort

Question 15

Having only a single reproductive effort in a lifetime, over one short period of time

Answer 15

Semelparous

Question 16

Having multiple broods over a lifetime

Answer 16

Iteroparous

Question 17

Condition among birds and mammals of being hatched or born usually blind and too weak to support their own weight

Answer 17

Altricial

Question 18

In birds, hatched with down, open eyes, and ability to move about

In mammals, born with open eyes and ability to follow the mother, as fawns and calves can

Answer 18

Precocial

Question 19

Killing of an offspring by another offspring of the same parents

Answer 19

Siblicide

Question 20

Short-lived species with a high reproductive rate at low population densities

Characterized by relatively small body size, rapid growth rate, large number of offspring, and lack of parental care

Answer 20

r-strategist

Question 21

A competitive species with a stable population with a slow growth rate

Long-lived individuals

They produce relatively few young or seeds, and provide parental care

Answer 21

K-strategist

Question 22

The transition from high birth and death rates to low birth and death rates

Answer 22

Demographic transition