TOPIC: 31 Amniotes

Question 1

3 shared derived traits of clade amniotes

Answer 1

1. amniotic egg
2. internal fertilization via intromittent organs
3. direct development

Question 2

an adaptation for laying eggs in land rather than in water

Answer 2

amniotic egg

Question 3

adaptions for terrestrial life

Answer 3

• thick, layered, impermeable skin
• axial skeleton muscle powered lungs ventilation (rib cage ventrilate the lungs

Question 4

what are the 3 major openings that classify aminotes

Answer 4

• anapsid (no tempiral fenestre)
• synapsid (one pair)
• diapsid (two pairs)

Question 5

temporal fenestre

Answer 5

major openings in the skull

Question 6

lacks temporal fenestre

Answer 6

anapsid (eg. turtles)

Question 7

one fenestre

Answer 7

synapsid (animals)

Question 8

two temporal fenestre

Answer 8

diapsid

Question 9

how many extraembryotic membranes is the embryo protected by

Answer 9

4

Question 10

what does the amniotic egg provide for the embryoÉ

Answer 10

gas exchange
nutrients
protection from dessication (shell, amnion chorion)

Question 11

two ways amniotes retain eggs

Answer 11

internally or externally (laying them on land)

Question 12

intromittent organexternal genetalic organ of males that is specialized to deliver sperm during copulation

Answer 12

intromitted organ