TOPIC: 31 Amniotes Flashcards
1
Q
3 shared derived traits of clade amniotes
A
- amniotic egg
- internal fertilization via intromittent organs
- direct development
2
Q
an adaptation for laying eggs in land rather than in water
A
amniotic egg
3
Q
adaptions for terrestrial life
A
- thick, layered, impermeable skin
- axial skeleton muscle powered lungs ventilation (rib cage ventrilate the lungs
4
Q
what are the 3 major openings that classify aminotes
A
- anapsid (no tempiral fenestre)
- synapsid (one pair)
- diapsid (two pairs)
5
Q
temporal fenestre
A
major openings in the skull
6
Q
lacks temporal fenestre
A
anapsid (eg. turtles)
7
Q
one fenestre
A
synapsid (animals)
8
Q
two temporal fenestre
A
diapsid
9
Q
how many extraembryotic membranes is the embryo protected by
A
4
10
Q
what does the amniotic egg provide for the embryoÉ
A
gas exchange
nutrients
protection from dessication (shell, amnion chorion)
11
Q
two ways amniotes retain eggs
A
internally or externally (laying them on land)
12
Q
intromittent organexternal genetalic organ of males that is specialized to deliver sperm during copulation
A
intromitted organ
