lack vascular tissues that transport materials( food and water) throughout the entire plant body
equipped with tissues that can transport food and water to the different parts of the plant body
Vascular spore-forming
The earliest vascular plant.
Their drought-resistant spores enable them to extend their geographic range.
The spore bearing structure range in size and type - maybe cone-like called strobilus.
Their bodies are anchored to the soil by underground rhizomes.
Vascular seed-forming
The presence of woody tissues that enable them to grow in size ,
a more complex vascular tissue that can transport water and nutrients to greater heights; and embryos that are enclosed in a structure called seeds.
Gymnosperms
Plants that bear “naked seeds” or seeds that are not produced within the ovary instead they are borne on the surface of reproductive structures called the cones.
Angiosperms
The plants that produce seeds enclosed in an ovary that eventually develops into a fruit.
They are considered the most numerous and diverse form of plants.
dorsal tubular nerve cord
string that extends throughout the entire length of the animal’s body
notochord
is a flexible longitudinal rod that supports the animal and allows it to execute some movements
pharengeal slits
are a series of openings that may be used for filter feeding and gaseous exchange
post- anal tail
extends posteriorly beyond the anal opening and may be supported by a notochord or a vertebral column.
chordates
have bony or cartilaginous vertebrae that replace the notochord partially or completely as the organism grows and develop