siencs
life on earth began in the ocean
origin of life
the process where algae and plants make thir food
photosynthesis
The first life forms and the ocean superheroes. They produce most of the oxygen in the atmosphere.
algae
unicellular= only one cell e.g. plankton
multicellular= many cells working together e.g. seaweed
cell structure
to move onto land, life needed adaptations to handle the lack of water and the need for support against gravity.
land challange
this first simple land plants. they have no true roots or vessles. their inability to transport water limits them to being very small.
mosses
the first vascular plants. they have true roots to absorb water from the ground and vascular vessels to transport it up, allowing them to grow taller
ferns
Fungi are a seprate kingdom. they are not plants becouse they cannot preform photosynthesis.
Fungi kingdom
the visible part is the mushroom. Then real organism is the network underground called the mycelium. the mycelium uses hyphae to absorb food
fungus structure
fungi that act as decompomposter. they break doen dead organic matter to turn them into new soil
saprophytes
A win win relationship where both organisms benefit from living together
symbiosis
Spore is a tiny unprotected cell with no stored food
Seed is a large protected multicellular, and has stored food reserve.
spore vs seed
The first step of reproduction is moving pollen to the stigma. happens via wind or animales
pollination