Rise of Mammals

Question 1

Mammal

Answer 1

warm blooded, fur/hair, live birth (ish), milk, three middle ear bones

Question 2

Endothermy

Answer 2

ability to control body temperature through internal means (shivering, increasing metabolism)

Question 3

homeothermy

Answer 3

maintaining a stable internal body temperature regardless of external temperatures

Question 4

Tachymetabolism

Answer 4

maintenance of a very high resting metabolism

Question 5

Adaptions that coincide with warm-bloodedness

Answer 5

more efficient metabolism, greater oxygen intake abilities and nutrient uptake, large lungs +diaphragm +improved circulation, more efficient method of removing waste

Question 6

fur/hair

Answer 6

insulation and sensory

Question 7

Monotremes

Answer 7

lay eggs, incubate eggs, only 4 species (platypus etc)

Question 8

marsupials

Answer 8

give birth to underdeveloped live young, continue to develop in protective pouch

Question 9

placental mammals

Answer 9

placenta facilitates exchange of nutrients, gestation entirely within mother

Question 10

Use of mammalian adaptation

Answer 10

possibly nocturnal adaptation to exploit niche

Question 11

Early mammals

Answer 11

small- the ones that survived dinosaur extinction