WITH COMPLETE SOLUTIONS GRADED A++ LATEST
UPDATE
what type of group are turtles?
a monophyletic group
where do turtles go in a cladogram?
not really sure where they go
- who they evolved from remains unknown
what order do turtles belong to
Chelonians
what do fossil forms of turtles indicate?
marginal teeth in jaw had been lost, and had a horny beak
what is Antrothpomorphic
giving other life forms human characteristics or thoughts
How have turtles survived this long?
they evolved a lifestyle that was successful and through time they've stuck with it
What is there lots of variation in in turtles
- shells (round, flat, soft shelled)
- shapes and sizes
What do turtles with flatter shells tend to indicate?
, that they are more aquatic
what do snapping turtles have that are different from other turtles?
have reduced shells and use jaws for defense more than their shells
what are the characteristics of marine turtles?
tend to be quite large, spend most of their time in the ocean, and their feet evolved into
flippers rather than formal limbs
what are Plurodira
snake necked turtles
what can plurodira do?
how do they do this?
retract their head really far out of their shell
their pelvic girdle is fused to the carapace
they horizontally withdraw their head into their shell (S shape)
What are Cryptodira
snapping turtles, large marine sea turtles, the lager head turtle, leather back turtle,
terrestrial tortoises, most soft shelled turtles
what can Cryptodira do
chew off fingers
can get very big