180 likes | 316 Views
Vascular Cone-bearing Plants. Conifers. Seed plants have several advantages over their seedless ancestors. can reproduce without free-standing water, via pollination. Seed plants include cone-bearing plants and flowering plants. pollination occurs when pollen meets female plant parts
E N D
Vascular Cone-bearing Plants Conifers
Seed plants have several advantages over their seedless ancestors. can reproduce without free-standing water, via pollination Seed plants include cone-bearing plants and flowering plants. • pollination occurs when pollen meets female plantparts • seeds nourish and protect plant embryo • seeds allow plants to disperse to new places
Gymnosperms do not have seeds enclosed in fruit. • “Gymnosperm” comes from a Greek word meaning “naked seed” • most gymnosperms are cone-bearing and evergreen. • pollen is producedin male cones. • eggs are produced in female cones. • seeds develop on scales of female cones.
Cycads are gymnosperms • look like palm trees with large cones • grow in tropical areas
Ginkgos are gymnosperms • only one species alive today, Ginkgo biloba • grown in gardens and used in urban landscaping
most common gymnosperms alive today • includes pines, spruce, cedar, fir, and juniper • Conifers are gymnosperms in phylum Coniferophyta.