The Platypus
This part of a platypus has electroreceptors that receive electric signals from its prey, which helps it find food.
What is its bill?
When organisms are descended from a single ancestor.
What is common ancestry?
Whales evolved from an ancient land animal that had this many legs.
What is four?
The name of the largest bone in a human's body. (Hint: it is in the leg.)
What is the femur?
This kind of platypus that has a venomous spur on its back feet.
What is a male platypus?
The study of the structures of organisms and their parts.
What is anatomy?
Modern horses have a hoof on each leg. The ancient ancestors of horses used to have THIS on each leg.
What are multiple (3-4) toes?
This is the only place in the world that you can find platypuses in their natural habitats.
Where is Australia?
When a platypus dives underwater to hunt for food, it closes these two things on its body.
What are its eyes and ears?
The sequence of heritable changes that occurred among species since the origin of life on Earth.
What is evolutionary history?
Ancient ancestors of whales, like the Pakicetus, lived here.
What is on land?
The ancestor from which all species of dogs evolved.
What is the wolf?
This is the name given to a baby platypus.
What is a cub?
To change the frequencies of alleles in a population over time.
What is evolve?
Because we are both mammals, whales use these for breathing, just like humans.
What are lungs?
The permanent disappearance of a species from Earth.
What is extinction?
This helps animals digest their food, but a platypus does NOT have one!
What is a stomach?
Similar structures in the anatomy of two different species with common ancestors.
What are homologous structures?
Since the bones in a whale's front flipper are very similar to the bones in a human arm, a whale flipper and a human arm are called THIS.
What are homologous structures?
The arrangement of things in the order that they occurred.
What is chronological order?