Botany Flashcards
1
Q
Byrophytes
A
- non-vascular
- flagellated sperm
- gametophyte=dominant phase
- sporophyte is dependent on gametophyte
2
Q
Pteridophyte
A
- vascular
- seedless
- flagellated sperm
- sporophyte=dominant phase
- free-living gametophyte
3
Q
Gymnosperm
A
- vascular
- seeds
- non-flagellated sperm
- sporophyte=dominant phase
- gametophyte retained within the sporophyte
4
Q
Angiosperm
A
- vascular
- seeds
- non-flagellated sperm
- flowers
- sporophyte=dominant phase
- gametophyte retained within the sporophyte
5
Q
Charophytes
A
closest relative of land plants
6
Q
Traits that charophytes share with land plants
A
- distinctive rings of cellulose-synthesizing complexes
- peroxisome enzymes
- flagellated sperm
- formation of a phragmoplast (cell plate) during division
7
Q
4 key traits that distinguish land plants from algae
A
- alternation of generations
- sporangia that produce walled spores
- gametangia that produce gametes
- apical meristems
8
Q
Sporopollenin
A
makes the walls of spores very tough and resistant to harsh environments
9
Q
sporocytes
A
within sporangia, diploid cells called sporocytes undergo meiosis and generate haploid spores
10
Q
female gametangium
A
- archegonium
- produce a single egg cell in a vase-shaped organ and the egg is retained within the base
11
Q
male gametangia
A
- antheridia
- produce and release sperm into the environment
