Diversity of Mammals

Question 1

Monotremes

Answer 1

Lay eggs.

Have reptilian bone structure in the shoulder area, lower body temperature that mammals and mix of mammalian and reptilian chromosomes.

Billed Platypus / Echidnas

Question 2

Marsupials

Answer 2

Pouches to hold babies after birth.

Mammary glands in the pouches to produce milk and carry on the development of their newborns.

Kangaroos / Pandas

Question 3

Placental Mammals

Answer 3

They have placentas( provide eggs and the eggs are fertilized internally where the fetus stays for the whole gestation period.

Elephants

Question 4

Insectivores

Answer 4

Shrews/Moles

Pointed Snouts and small sized.

Question 5

Chiroptera

Answer 5

Bats

Only Mammals that can fly.

Question 6

Primates

Answer 6

Monkeys / Chimpanzees.

Large Brains and opposable thumbs.

Question 7

Xenarthra

Answer 7

Sloths / Anteaters.

Feed on Insects and toothless.

Question 8

Therapsids

Answer 8

Mama like reptiles and mammals evolved from due to the fossil evidence that also indicates that mammals won’t come in until the exception of dinosaurs

Therapsids weren’t extend to 170, million years ago

they evolved a sub group called
Cynodonts that were more mammalian like


Question 9

How are Therapsids similar to mammals

Answer 9

• a pair of holes in the roof of the skull is your muscles

– limbs beneath the body

– had been endothermic possibly