Plant Biodiversity Flashcards
Name 4 divisions of plant kingdom
Bryophytes
Pteridophytes
Gymnosperms
Angiosperms
What 5 presences differentiate the divisions?
Vascular tissue (xylem & phloem) True leaves & roots Seeds / spores Cones / flowers Fruit
Characteristics of bryophytes
No vascular tissue
No true leaves or roots
Reproduce by means of spores
Depend on water for fertilization
What does vascular tissue form?
True leaves and roots
Characteristics of Pteridophyte
Vascular tissue Seedless True leaves and roots Reproduce by means of spores Depend on water for fertilization
2 differences between seedless plant and seed bearing plants
Gametes do not depend on water for fertilization
Heterosporous ( spores are either male or female )
2 major evolutionary advancements of seed plants
Pollen tubes
Resistant seeds
Characteristics of gymnosperms
Vascular tissue
True leaves and roots
Heterosporous
Characteristics of angiosperms
Vascular tissue
True leaves & roots
Flowers
Fruit (with seeds enclosed in an ovary)
Why is water no longer required for the fertilization of gymnosperms & angiosperms ?
Development of pollen tubes & seeds
What is a phylogenetic tree ?
Represents the evolutionary relationships among a set of organisms that arose from a common ancestor