Chapter 25.5: Vertebrates on Land

Question 1

Amniote:

Answer 1

Vertebrate that has a thin & tough membranous sac that holds the embryo/fetus

Question 2

All amniotes share a set of characteristics that prevent ()

1) Skin cells are waterproofed with (), a protein that binds to lipids inside the cell forming a water repellent layer
2) Kidneys and large intestines are () in amniotes than amphibians: these organs contain tissues that () water

Answer 2

water loss; keratin; bigger; reabsorbs

Question 3

Amniotic Egg:

Answer 3

An almost completely waterproof container that keeps the embryo from drying out as it develops

Question 4

After the evolution of the amniotic egg, amniotes didn’t have to go find a wet environment to ()

Answer 4

reproduce

Question 5

Other amniotes make () but do not () them; They keep their eggs in their () until they hatch [(),()]

Answer 5

eggs; lay; oviduct; rattlesnakes; garter snakes

Question 6

Placenta:

Answer 6

Membranous organ that develops in female mammals during pregnancy

Question 7

The placental lines the () wall and carries nutrients from the mother -> embryo

Answer 7

Uterine