Gymnosperms

Question 1

examples and the main one?

Answer 1

Gnetales, ginkgo, conifers, cycads
pine- terrestrial

Question 2

vascular tissue?

Answer 2

well developed

Question 3

structure of pine with adaptations? (2)

Answer 3

well-developed tap root system with mutualistic fungi for nutrient and mineral absorption
woody bark stems with dwarf shoots and minimized transpiration, cuticles, and small surface leaves for terrestrial

Question 4

Reproduction? (5)

Answer 4

male cones- clusters of pollen sacs with pollen grains with male gametes
female cones- woody bracts( scales) in cone that have female ovum
pollen is dispersed by wind and lands on female cones- on bracts
fertilization- male pollen grain has pollen tube to release male gamete and fuse with female ova to form a zygote- develops to embryo which is enclosed in a seed
seeds are dispersed by wind and have wings to dispersion as well as seed coat for protection and nutrients for embryo
NO WATER OR SPORES REQUIRED

Question 5

why are seeds important?

Answer 5

food source- humans can get protein from legumes and carbs from grains
seed banks- a genetic variation of seeds to maintain biodiversity

Question 6

which generation is dominant?

Answer 6

sporophytic ( seeds and trees)