How Did Plants Evolve

Question 1

How did land plants avoid danger of dessiccation (drying out)?

Answer 1

Cuticle evolved (waxy layer on surface of cells) to prevent water loss)

Question 2

How did land plants adapt to breath?

Answer 2

Developed a stomata (small opening) that would open and close to take in O2 and release CO2. Could close to keep water from leaking

Question 3

How did land plants develop access to Nitrogen and Potassium?

Answer 3

Developed roots to get nutrients from minerals. Fungus in the end of roots would break down nutrients in soil

Question 4

How did land plants avoid needing support from water?

Answer 4

2 methods
1- Xylem vessels provide rigidity. Vessel takes water from roots, phoem takes takes sugar from top of plant to distribute it
2- Contractile vacuoles store water to help plant cells fill/hold their shape

Question 5

How did land plants evolve to reproduce on land?

Answer 5

Wind born pollen and spores transport sperm

Question 6

How did land plants evolve for the climate?

Answer 6

Since they can only live in one place at a time, they are all tailored to adapt to their climate