Plants Flashcards
What are the 4 groups of plants
Pteridophyte,bryophytes,Angiosperms and gymnosperms
How do you define plants
Tee leaves/roots Flowers/cones Seeds/spores Vas tissue Fruit
Characteristics of bryophytes
No vas tissue Water for fertilisation No true leaves Spores Embryo grows immediately
Pteridophyte characteristics
Spores Rely on water for fert True leaves and roots Vas tissue Developed for photosynthesis
Gymnosperms characteristics
Thin leaves
Vascular tissue
Water and wind for repro
Naked seeds and cones
Angiosperm characteristics
Flowers Seeds Vas tissue Cuticle and spore True leaves
What is gametangia
Mass of cells that produce gametes
Phylogenic tree
Represents the relationships between orgs of a common ancestor
Advantages of asexual repro
Propagated thru year
One rent
Rapid passing of good mute
Quick no outside help
Disadvantages of asexual repro
No variation
Genetic weakness can’t be bred out
Advantages of sexual reproduction
Variation
Wide disperse seed prevent disease spread
Disadvantages of sexual reproduction
Large amount of energy
Our agents needed
Unfave disease and mutes may pass on
