How do mammals reproduce

GROUPS We can classify mammals into 3 groups

by the way that they reproduce Monotremes Marsupials Placental mammals

MONOTERMS Monotremes don’t give birth . They lay

eggs.The young grow inside the eggs . They are quite well-developed when they come out .

MARSUPIALS The young grow inside their mother´s

body , but they aren´t well-developed when they are born . They must continue to develop inside their mother´s puch .

PLACENTAL MAMMALS They are the most numerous group of

mammals. The young grow inside the mother´s body.

They are well-developed when they are born.

HUMANS BEGINS We are placental mammals . We also are

members of the primate family , along with chimpanzees and gorillas . We also share this characteristics with them .

We have fingers that we can use to manipulate objets .

Our eyes are at the front of our head . So we can see straight ahead .

We are different because we are bipedal . That means that we walk on two legs .

PHOTO HUMAN BEINSIn

this photo we can see a

girl with a monkey.

PLATYPUS Most platypus live in Australia, others

live in Tasmania . Their body is covered with dense, brown fur that traps a layer of insulating air to keep the animal warm . They are carnivores .

QUESTIONS How many groups of mammals are there? Do monoterms give birth? Where do platypus live? Where do young marsupials grow?

ANSWERDS There are 3 groups. No,they lay eggs. Most live in Australia, but others live in

Tasmania. In their mother´s body.

VIDEOS MAMMALS

• DOCUMENTAL OF MAMMALS

GAMES GAME OF MAMMALS

BY SOFIA GALLARDO

SUBJET:SCIENCECLASS:5ºA