1st in bio

Protists had/were the first…

1st eukaryotes=1st nucleus

1st organisms with organelles

can be unicellular and 1st multicellular

Seedless nonvascular plants were the first…

1st land plants

Seedless vascular plants were/had the first…

1st forests

1st vascular tissues (tissues that transport nutrients and all plants to live away from water and grow large)

1st specialized organs (root, stem, leaves)

cone bearing plants had/were the first…

Reproduce using the 1st/Only Cones that make the 1st seeds

a)Female cones produce exposed plant eggs (1st) (female gamete)

b) Male cones produce pollen (1st ) (male gamete)

flowering plants were/had the first….

1st/only flowers and fruit

sponges (invertebrates) were the first…

1st animals

only animal w/asymmetry

cnidarians (invertebrates) had/were the first…

1st with radial symmetry

1st with tissues (but no organs)

1st "nervous system"=nerve net

flatworms (invertebrates) had/were the first…

1st bilateral symmetry

1st organ (a digestive tube)

1st ganglion=cluster of nerves (pre-brain)

roundworms (invertebrates) had the first…

1st organ systems

segmented worms (invertebrates) had the first…

1st Body in segments(stronger/digging)

1st Brain

mollusks (invertebrates) had the first…

1st Mantle=body tissue that makes shell

1st /Only Shell=hard secretion for protection/body support

echinoderms (invertebrates) had the first…

1st Endoskeleton=internal skeleton

arthropods (invertebrates) had the first…

Body in segments w/ 1st complex jointed parts (legs, antenna,

mouth parts, wings)

1st /only Exoskeleton external skeleton made of chitin

fish (vertebrates) had the first…

1st Cartilage or Bone Endoskeletons

1st Vertebrate/Spine

amphibians (vertebrates) had the first…

1st land living vertebrates (1st feet/legs)

Metamorphosis- Larva live in water w/ gills & adults live on land w/ lungs (1st lungs)

reptiles (vertebrates) had the first…

Oviporous- Leathery eggs that resist dehydrating (Laid the 1 st vertebrate eggs on land)

1st Amniotic Egg= it contains a nutrient "pond"

Can live all of their lifespan on land (1 st vertebrate)

Archaeopteryx= the first fossil that helped prove that birds evolved from reptiles (half bird and half reptile)

birds (vertebrates) had the first…

1st/Only Wings w/ Feathers

1 st Endotherm= internal body processes control the heat of the body

mammals (vertebrates) had the first…

1 st /Only Mammary Glands= make milk

1 st /Only skin with fur or hair

1 st /Only Viviparous= babies are born alive and are nourished by the mother