Reproductive Animal Strategies Flashcards Preview

Life Sciences Paper 1 > Reproductive Animal Strategies > Flashcards

Flashcards in Reproductive Animal Strategies Deck (24)
Loading flashcards...
1
Q

Reproduction

A

Life process that ensures the continued survival of the species through the production of a new generation of organisms from an existing generation

2
Q

Reproductive effort

A

The ultimate goal of each animal species to produce the maximum number of surviving Aspen well using the least amount of energy

3
Q

Strategy

A

Genetically determined behavior

4
Q

Courtship

A

Behavior and or signals that are designed to attract another animal for mating and breeding

5
Q

Cloaca

A

A single opening located in the lower abdomen.

During mating, the males and females line up their cloacae for the transfer of sperm

6
Q

Copulation

A

The introduction of sperm into the female through the use of a penis

7
Q

Fertilization

A

Joining of nucleus of an egg and sperm

8
Q

External fertilization

A

Takes place in water and occurs in most aquatic vertebrates

9
Q

Internal fertilization

A

Occurs in terrestrial vertebrates

10
Q

Ovipary

A

Eggs develop outside of the parent

11
Q

Ovovivipary

A

Eggs that are fertilized internally are kept inside the female body until they hatch

12
Q

Vivipary

A

Fertilization is internal and eggs do not have a shell

13
Q

Amniotes

A

Reptiles and birds

14
Q

Precocial Development

A

Species hatch all born when they are almost fully developed.
Parental energy expended in prenatal developments

15
Q

Altricial development

A

Species hatch or are born not well developed.

Parental energy expended in post natal developments

16
Q

Parental care

A

Any pattern of behavior in which a parent spends time or energy to improve the survival, conditions and future reproductive success of offspring

17
Q

Biparental care

A

Parental care by both sexes

18
Q

Prenatal care

A

Guarding eggs, building nests, carrying broods, incubating eggs and placental nourishing

19
Q

Postnatal care

A

Providing food, protecting offspring, teaching of spring

20
Q

K- strategy

A

Few offspring

High level parental care

21
Q

Climax species

A

Produce slightly more offspring then the maximum the environment can hold

22
Q

R-strategy

A

Many offspring

No parental care

23
Q

Survivorship Curve

A

Curve which expresses a certain species particular pattern of mortality

24
Q

Chemotaxis

A

The movement of a cell or organism in response to chemical stimulus