Mammals are divided into ____ groups based on how they give birth.

Characteristics of mammals include ____ [multiple answers]

Monotremes are mammals that

Marsupials are mammals that

Placental mammals ___

Examples of Montremes are _____ [2 answers]

Examples of Marsupials are _____ [3 answers]

Examples of Placental mammals are _____ [multiple answers]

Placental mammals carry their young inside a _____ which is a solid disc of

blood-rich tissue that attaches to the wall of the uterus to 

support the developing embryo

Placental mammals carry their young ________ than other mammals

In placental mammals, the embryo is connected to its mother by the _____

The umbilical cord connects the mother's bloodstream to the embryo's bloodstream and delivers ____ and _____ to the embryo [ multiple answers]

The umbilical cord connects the mother's bloodstream to the embryo's bloodstream and removes ______ from the embryo

Two groups of mammals have young that develop inside the mother's body

A bat and a horse are both mammals because ____ [multiple answers]

A Kangaroo and a Blue Whale are both mammals because ____ [multiple answers]

Birds, snakes, elephants, kangaroos, blue whales, and humans share the following 2 traits

Birds, snakes, fish, and humans share the following trait

Less than 10% of all animals on Earth. Have a backbone. Examples - birds, mammals, fish, amphibians and reptiles

Greater than 90% of all animals on Earth. Do not have a backbone. Examples - jellyfish, starfish, insects, spiders, clams, crustaceans, squid, and coral

Body temperature stays the same. Also known as endotherm. Examples - birds and mammals.

Body temperature is the same as the environment. Also known as ectotherm. Examples - fish, amphibians, and reptiles.

Type of vertebrate that breathes with lungs. Lays eggs. Warm-blooded. Body covered with feathers. Hollow bones. Examples - Raven, Pigeon, Albatross.

Type of vertebrate that breathes with lungs. 3 types - monotremes, marsupials, placental. Warm-blooded. Body covered with fur or hair. Feed young milk. Examples - Platypus, Opossum, Boar

Type of vertebrate that breathes with gills. Lay eggs or have live birth. Live in freshwater or marine water. Cold-blooded. Body covered with scales. Examples - shark, catfish, trout

Type of vertebrate that breathes with lungs. Lays eggs - some have live birth. Cold-blooded. Body covered with scales. Examples - coral snake, hognose snake, flat lizard

Type of vertebrate that breathes with gills, lungs, or skin. Lays eggs in water. Cold-blooded. Body covered with skin. Young live in water. Adults live on land but near water. Examples - frog, salamander, toad.

Used to breathe when in water. Examples - fish and young amphibians - tadpoles.

Used to breathe when on land. Examples - mammals, reptiles, birds and adult amphibians - frogs.