Question

Fill the table

	Habitat	Growth form	Tissue differentiation	Stomata	Conducting tissues	Reproductive structures	Branching
Rhyniophyta
Zosterophyllophyta
Trimerophyta

What do these three phylum tell us about the evolution of the traits in the table above?

Answer 1

	Habitat	Growth form	Tissue Differentiation	Stomata	Conducting tissues	Reproductive structures	Branching
Rhyniophyta	Hot springs	Stems with sporangia and are stem group tracheophytes	Simple shoots that grow from an axis and has simple branched stems. They lacked leaves, seeds and flowers with horizontal stems and roots.	No as they lacked true leaves	Some known to consists of xylem but most of them lacked vascular tissue	Spore bearing	Dichotomously branched
Zosterophyllophyta	Aquatic environment	Creeping stems with dichotomous branching and narrow leaves which are linear in shape	Consists of stems that is covered with small spines and has a vascular column	No	Xylem exarch	Consists of sporangium	Dichotomous or monopodial branching
Trimerophyta	Tropical habita	Consists of branching stems with vascular tissues and has a central bundle located in the center	Vascular tissue with a central stem and have unequal branching	No	Xylem exarch or mesarch	Sporangium which is of shape like reniform	Dichotomously branched