Test 3 B Flashcards
What does cutin?
molecule that forms the plant’s cuticle
What is the special structure that allows gas exchange?
stomata
What 3 parts do plants have?
Tissues
Organs
Organ systems
What kinds of tissues are there?
Dermal: surround the plant
Vascular: conduct fluid
Ground: for metabolic activity
Epidermis vs Bark
Epidermis: 1º dermal tissue
Bark: 2º dermal tissue
What is special for archeologists about vascular tissue?
Vascular tissue fossilizes
What kinds of organ systems are there?
shoot system
root system
What are the 2 routes to the evolution of leaves?
microphyll: enations became vascularized
megaphyll: lateral branches became webbed
Bryophytes vs Trachephytes
Bryophytes:
• dominant gametophyte, reduced sporophyte
• lack true tissue
Tracheophytes:
• dominant sporophyte, reduced gametophyte
• have tissues, organs, and organ systems
Free sporing vs seed plants
free sporing: gametophyte is free living
seed plants: spores are retained
The seed is made up of what?
seed coat
food for embryo
embryonic sporophyte
Pycnoxylic is what?
form lots of wood
Word for forming small amounts of wood
monoxylic
Word for plant that has both male and female parts
monoecious
Word for plants that have male and female parts on separate individuals
dioecious
