Simple Life Cycles

1
Simple Life Cycles
Good for studying similarities and differences
b/t life cycles
2
Chlorophytes
Mitosis
1 N
Zoospores or gametes
Meiosis
2 N
Fertilization
2 N
3
Bryophytes
Spores 1 N
Gametophytes 1 N
Meiosis
Archegonia
Antheridia
Sporophyte 2 N
Eggs
Sperm
2 N
Fertilization
Archegonia Antheridia on separate gametophytes
4
Seedless Vascular Plants
Spores 1 N
Gametophyte 1 N
Meiosis
Archegonia
Antheridia
Sporophyte 2 N
Eggs
Sperm
2 N
Fertilization
5
Coniferophyta
Microgametophyte 1 N
(Pollen grain)
Microspores 1 N
Meiosis
Megagametophyte 1 N
Megaspores 1 N
Archegonia
Microsporangiate cones
Eggs
Sperm
Sporophyte 2 N
Megasporangiate cones
2 N
Pollination Fertilization
6
Anthophyta
Microgametophyte 1 N
(Pollen grain)
Microspores 1 N
Meiosis
Megagametophyte 1 N
Megaspores 1 N
Microsporangia anthers
Eggs
Sperm
Sporophyte 2 N
Megasporangia ovule
Pollination Fertilization
2 N