Bryophytes #15 Flashcards
What are the steps in the evolution of land plants?
Algal mats, multicellular algae, terrestrial bryophyte
What are the major groups in embryophyta?
Nonvascular plants, seedless vascular plants, seeds plants, flowers
What are the key innovations in the groups of embryophyta?
Resistance to desiccation, vasculature, seeds, flowers
What are the important characteristics of bryophytes?
Nonvascular land plants rely on proximity to water
What are the 3 groups the bryophytes have & their evolutionary relationships?
Liverworts, hornworts, mosses - vascular plants & earliest diverging group
What are the vascular tissues and their importance?
Complex conducting tissues composed of different cell types that transport fluids & nutrients; do not have a stem containing xylem & phloem (seed/ flower)
What is alternation of generations?
Life cycle
What does homomorphy mean?
Gameotophhyte (1n) & sporophyte (2n) phases appear identical
What does heteromorphy mean?
Phases do not appear identical
How do bryophytes cope with desiccation & their terrestrial adaptations?
Avoiding it, cycling through desiccation, main adequate water supply in all tissues, desiccation rehydration cycles
What are the dominant phases in nonvascular plants?
Gametophyte
What are the dominant phases in vascular plants?
Spores
Sporangium
Capsule
Rhizod
Anchor do not conduct
Protonemata
Spores germinate
