bio 27

land plants are thought to have evolved from:

-green algae

the bryophytes:

-includes mosses, liverworts, and hornworts AND are small plants that lack a vascular system

spores grow:

-into gametophyte plants -into a haploid plant -to form a plant body by mitosis

the gametophyte generation of a plant:

-is haploid -produces haploid gametes by mitosis

the green, gametangia-bearing moss plant:

-is the haploid gametophyte generation

a sporangia is:

-on a diploid plant -on a vascular plant -found on ferns

the sporophyte generation of a plant:

-produces haploid spores by meiosis -is diploid

in plant life cycles:

-the first stage in the diploid sporophyte generation is the zygote

when a gamete produced by an archegonium fuses with a gamete produced by a male gametophyte plant, the result is:

-the first stage in the sporophyte generation -a diploid zygote -fertilization

the spore cases on a fern are:

-usually on the fronds -called sporangia -often arranged in sori

which of the following is not a characteristic of plants?

-alternation of generations

plant sperm cells form in:

-antheridia -haploid gametophyte plants

red algae, green algae, and land pants are collectively classified as

-archaeplastids

all plants:

-are a monophyletic group -have a cuticle covering the aerial portion of the plant -develop from multicellular embryos -evolved from green algae -store starch

liverworts:

-are bryophytes -can produce archegonia and antheridia on a haploid gametophyte

the leaves of vascular plants that evolved from branching stems:

-are megaphylls -contain more than one vascular strand

the waxy layer that covers aerial parts of plants is the:

-cuticle

which of the following statements about ferns is not true?

-ferns are the most important group of bryophytes

stomata:

allows gas exchange for photosynthesis

the leafy green part of a moss is the:

gametophyte generation

a strengthening compound found in cell walls of vascular plants is:

lignin