precocial and altricial development Flashcards
1
Q
terms
A
- strategies of development
- related to particular natural environment
2
Q
mammals
A
- provide nourishment (mammary glands)
- protect from predation
3
Q
precocial development
A
- born when almost fully developed
- energy to prenatal developments
- open eyes and hair/down
- large brains relative to body size
- immediately active and mobile
- often not confined to nests
4
Q
how does precocial development maximise production?
A
- feed themselves
- look after themselves
5
Q
examples of precocial species
A
- ground nesting birds
- large mammals
6
Q
altricial development
A
- born and hatch when not well developed
- energy into postnatal development
- often naked (lacking hair/down)
- can not walk or fly
- often closed eyes
- rely entirely on parents
- coloured mouth lining
- require care and protection
7
Q
how does altricial development maximis reproduction?
A
- parental care
- ensured nutrition
- reach reproductive stage quickly
- easier to feed
- grow rapidly
- safer from predation
8
Q
examples of altricial species
A
- small mammals
- humans
- tree nesting birds
- marsupials
