Pteridophytes

Question 1

what are pteridophytes?

Answer 1

ferns

Question 2

environmental conditions and adaptation of pteridophytes

Answer 2

moist/ shady
waxy cuticle to prevent dessication

Question 3

Vascular tissue?

Answer 3

well developed

Question 4

Structure of both generations (5)

Answer 4

sporophytic:
Fronds- a group of leaves (pinna) growing from a rhizome
Sori- clusters of sporangia on the underside of the pinna ( has indicium which flaps in wind)
rhizome-horizontal stem of which roots grow adventitiously for anchorage and absorption
True roots/ leaves/ stem

Gametophytic:
Prothallus- heart-shaped structure (male and female gametes with rhizoid for anchorage and absorption

Question 5

life cycle/ reproduction?

Answer 5

asexual- spores get dispersed by flapping indicium in wind- spores then germinate into prothallus(sexual) - has male (antheridium) and female(archegonium) gametes- male uses water to fertilize ova- zygote develops into sporophytic generation
Initially parasitic of the prothallus

Question 6

which is the more dominant generation?

Answer 6

sporophytic