BIO 1108 EXAM QUESTIONS AND
ANSWERS A+ GRADED
Plants
Originated from green algae
multicellular eukaryotic photosynthetic autotrophs
cell walls made of cellulose
Derived traits of plants
1. alternation of generations
2. multicellular, dependent embryos
3. walled spores produced in sporangia
4. multicellular gametangia
5. apical meristems
Multicellular, dependent embryos
WThe diploid embryo is retained within the tissue of the female gametophyte
Nutrients are transferred from parent to embryo through placental transfer cells
Land plants are called embryophytes because of the dependency of the embryo on the
parent
Walls produced in sporangia
Sporocytes: Diploid cells that undergo meiosis togenerate haploid spores Sporangia:
Spore-producing organ in sporophyte Sporopollenin: Polymer in spore walls that makes
them resistant in harsh environment
multicellular gametangia
Gametes are produced within organs called gametangia
Female gametangia, called archegonia, produce eggs and are the site of fertilization
Male gametangia, called antheridia, produce and release sperm
Aperical meristem
Sustains continual growth ofthe plant Cells differentiate into various tissues Facilitates
resource acquisition above & below ground
Cuticle
The transition from sea to land is possible because of this. Helps maintain moisture.
obtain resources from two locations. Obtain water nutrients from soil.
Non vascular body
Not differentiated into true stems and leaves known as thallus.
Charophytes
green algae that are the closest relatives of land plants
vascular tissue in plants
Support plant body
allows to grow tall
lignin strengthen cell walls
reproduce without water
non-vascular plants(bryophytes)
No seeds, lack vascular tisssue, small,require water for reproduction.
mosses,liverworts,mosses and hornwarts.
ANSWERS A+ GRADED
Plants
Originated from green algae
multicellular eukaryotic photosynthetic autotrophs
cell walls made of cellulose
Derived traits of plants
1. alternation of generations
2. multicellular, dependent embryos
3. walled spores produced in sporangia
4. multicellular gametangia
5. apical meristems
Multicellular, dependent embryos
WThe diploid embryo is retained within the tissue of the female gametophyte
Nutrients are transferred from parent to embryo through placental transfer cells
Land plants are called embryophytes because of the dependency of the embryo on the
parent
Walls produced in sporangia
Sporocytes: Diploid cells that undergo meiosis togenerate haploid spores Sporangia:
Spore-producing organ in sporophyte Sporopollenin: Polymer in spore walls that makes
them resistant in harsh environment
multicellular gametangia
Gametes are produced within organs called gametangia
Female gametangia, called archegonia, produce eggs and are the site of fertilization
Male gametangia, called antheridia, produce and release sperm
Aperical meristem
Sustains continual growth ofthe plant Cells differentiate into various tissues Facilitates
resource acquisition above & below ground
Cuticle
The transition from sea to land is possible because of this. Helps maintain moisture.
obtain resources from two locations. Obtain water nutrients from soil.
Non vascular body
Not differentiated into true stems and leaves known as thallus.
Charophytes
green algae that are the closest relatives of land plants
vascular tissue in plants
Support plant body
allows to grow tall
lignin strengthen cell walls
reproduce without water
non-vascular plants(bryophytes)
No seeds, lack vascular tisssue, small,require water for reproduction.
mosses,liverworts,mosses and hornwarts.
