Terrestrial Plant Diversity-Seed bearing plants Flashcards
The seed contains
embryo
nutrients
protective coat
Heterosporus (2 types)
Microspore (male) and Megaspore (female)
Dioecious
two house (male and female)
Monoecious
one house (mega/micro on same plant)
Gymnosperms Example
Pine Trees
Gymnosperms characteristics (3)
1) “naked seeds”-not enclosed by ovary
2) adapt to dry conditions
3) 1 pollen grain-contain nutrients needed
Angiosperms examples (3)
Watercots, Dicots, Waterlillies, Pine Cone,etc.
Angiosperm characteristics (4)
1) Seeds enclosed by ovary
2) Rely on flowers for sexual reproduction
3) most abundant plants on earth
4) 150 mil years old
Double Fertilization
Angiosperms-one egg for embryo and one for nutrients
Pine cone is a angio or gymnosperm?
Gymnosperm
Gymnosperm types (5)
1)Cycadophyta 2)Ginkophyta 3)Cypressophyta 4)Gnetophytes 5)Pinophyta
Cycadophyta
Gymnosperm
Look like palms
Ginkophyta Characteristic
Male/female plants (deciduous)
“Living Fossil”
Cypressophyta ex and characteristics (2)
Redwoods, junipers, yews
1) narrow, scaled leaves
2) cold, dry environments
Gnetophytes Ex and Characteristics (3)
1)contain vessel elements 2)tropical/desert trees, shrubs, and vines 3)Micro/megasporangia flower like to allow insects to assist in reproduction