Exam 2 Ch 29 Plant Diversity I: How Plants colonized land
QUESTIONS AND SOLUTIONS
Know Basic characterisitcs
Domain Eukarya
Kingdom Plantae
Bryophytes (nonvascular plants)
Phylum Hepatophyta (liverworts)
Phylum Anthocerophyta (hornworts)
Phylum Bryophyta (mosses)
Seedless vascular plants
Phylum Lycophyta (club mosses, spike mosses, and quillworts)
Phylum Pterophytes (ferns, horsetails, and whisk ferns) - ANSWER - ...
29.1
• Describe four shared derived homologies that link charophyceans and land plants. - ANSWER - Rosette-shape
cellulose-synthesized complexes.
Peroxisome enzymes.
Structure of flagellated sperm.
Formation of a phragmoplast.
• Describe four characteristics that distinguish land plants from charophycean algae. - ANSWER - Alternation of
generations and multicellular, dependent embryos.
Walled spores produced in sporangia.
Multicellular gametangia.
Apical Meristems.
• Define and distinguish among the stages of the alternation of generations life cycle. - ANSWER - Gametophyte
produces haploid gametes by mitosis.
2 gametes unite and form a diploid zygote.
The zygote develops into a multicellular diploid sporophyte.
The sporophyte produces haploid spores by meiosis.
The spores develop into multicellular haploid gametophytes.
29.2
• List and distinguish among the three phyla of bryophytes. - ANSWER - • Bryophytes are represented today by
three phyla of small herbaceous (nonwoody) plants
o Liverworts, Phylum Hepatophyta
o Hornworts, Phylum Anthocerophyta
o Mosses, Phylum Bryophyta
Liverworts (Phylum Heptophyta) - ANSWER - Liver-shaped gametophytes.
Some described as "thalloid"; flattened shape of their gametophytes.
Some described as "leafy"; stemlike gametophytes have many leaflike appendages.
Horworts (Phylum Anthocerophyta) - ANSWER - Lacks a seta (stalk) and consists only of a sporangium.
Sporangium releases mature spores by splitting open, starting at the horn.
QUESTIONS AND SOLUTIONS
Know Basic characterisitcs
Domain Eukarya
Kingdom Plantae
Bryophytes (nonvascular plants)
Phylum Hepatophyta (liverworts)
Phylum Anthocerophyta (hornworts)
Phylum Bryophyta (mosses)
Seedless vascular plants
Phylum Lycophyta (club mosses, spike mosses, and quillworts)
Phylum Pterophytes (ferns, horsetails, and whisk ferns) - ANSWER - ...
29.1
• Describe four shared derived homologies that link charophyceans and land plants. - ANSWER - Rosette-shape
cellulose-synthesized complexes.
Peroxisome enzymes.
Structure of flagellated sperm.
Formation of a phragmoplast.
• Describe four characteristics that distinguish land plants from charophycean algae. - ANSWER - Alternation of
generations and multicellular, dependent embryos.
Walled spores produced in sporangia.
Multicellular gametangia.
Apical Meristems.
• Define and distinguish among the stages of the alternation of generations life cycle. - ANSWER - Gametophyte
produces haploid gametes by mitosis.
2 gametes unite and form a diploid zygote.
The zygote develops into a multicellular diploid sporophyte.
The sporophyte produces haploid spores by meiosis.
The spores develop into multicellular haploid gametophytes.
29.2
• List and distinguish among the three phyla of bryophytes. - ANSWER - • Bryophytes are represented today by
three phyla of small herbaceous (nonwoody) plants
o Liverworts, Phylum Hepatophyta
o Hornworts, Phylum Anthocerophyta
o Mosses, Phylum Bryophyta
Liverworts (Phylum Heptophyta) - ANSWER - Liver-shaped gametophytes.
Some described as "thalloid"; flattened shape of their gametophytes.
Some described as "leafy"; stemlike gametophytes have many leaflike appendages.
Horworts (Phylum Anthocerophyta) - ANSWER - Lacks a seta (stalk) and consists only of a sporangium.
Sporangium releases mature spores by splitting open, starting at the horn.
