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What are the four groups of organisms to invade land?
First were the plants and fungi, then came the arthropods, then finally the vertebrates.
What feature did the first land vertebrates lack?
A Jaw Eggs that would not dry out
The first land vertebrates appeared in the?
The first land vertebrates appeared in the: Devonian
Why are amphibians unsuccessful on land vertebrates?
Amphibians are cold blooded so they cannot regulate temperature.They need water for egg lying.Their eggs are not covered with shell so they may become dry on land and eggs may be wasted.Their skin is so naked, no external covering
What adaptations made it possible for vertebrates to become land dwellers?
Lungs, legs, major changes in renal function (water conservation), "dry" skin.
What evolutionary milestone involving animals occurred during the devonian period?
Sharks, lung fish, bony fish, trilobite, and,amphibians.
What is the definition to enter a land to conquer it?
invade
Vertebrates that have dry scaly skin are called?
amphibians
What are land dwelling vertebrates called?
Tetrapods
What are three challenges that had to be overcome by vertebrates colonizing land habitats?
There were many challenges that vertebrates had to overcome in order for them to colonize land habitats. Three of the most challenging tasks that vertebrates had was to learn how to eat the food on the land to sustain their energy and nutritional needs, how to breath, and how to defend themselves against predators.
Do vertebrates live in water?
Vertebrates are animals with a backbone, so some vertebrates live in water (e.g. fish) but others live on land (e.g. cows).
What ectothermic vertebrates with dry scaly skin that lay amniotic eggs?
Reptiles
