Embryophyte

What is waxy cuticle

Epidermis of a plant that has a thick, lipid wax coated to prevent water absorption through leaf

Why is the waxy cuticle important?

It allows water retention when it’s not raining

What is problem with waxy cuticle?

Prevents gas exchange, makes it harder to take in carbon dioxide and harder to release oxygen

How did Embryophyte s fix the problem where waxy cuticles prevent gas exchange?

Gained stomata

What is a stomata ?

Guard cells that allow open enclosure of pores on leaves

What does stomata allow?

Allows water retention, releasing oxygen and taking in carbon dioxide

What can happen if a stomata is left open

Lose water

Major synapamorph of Embryophyte

Egg retain in maternal tissue

Out group of Embryophyte

Bryophyte

Synaphamorph of bryophyte

All non-vascular plants

What do bryophyte not have?

No vascular tissue no circulatory system nor true organs

What does bryophyte rely on

Eliza plasma demo to move water between cells. It is more efficient than osmosis, but they cannot get tall.