biol 227 Study Questions with Complete Solutions
2 classes of phylum tracheophyta - ANS lycopodiopsida-club mosses and polypidiopsida- ferns
and horse tails
lycopiodiopsida has - ANS microphills - one unbranched leaf vein, strobili- cones
bryopsida in NZ - ANS bretulia- stout red stems , antheridia in orange splash cups,
laves tappered at ends , also umbrella mosses,
polytrichopsida in NZ - ANS hair cap mosses, stiff efect unbranched stems, dark green redish
leaved with point at end
sphanginopsida in NZ - ANS pale green to yellow brown or pinkish, leaf tip rounded,
swampy areas, branch leaves wide or concanve
types of stele - ANS protosteele solid cylinder of vascular tissue, siphonostele has pith no
leaf gaps, siphonosteele with leaf gaps, eusetele is system of discrete strands of vasculat
tissue around the pith
plant reproductive cycle 1 - ANS 1- gametophyte produces hapliod gametes bt mitisos , 2-
two gamets fertalise nd form diploid zygote, 3 zygote developes into spyrophyte, 4-
sprophyte produces spores, 5-spores develope into multicellular gametophytes
gametophyte - ANS the gamete-producing and usually haploid phase, producing the zygote
from which the sporophyte arises.
sporophyte - ANS the asexual and usually diploid phase, producing spores from which
the gametophyte arises.
bryophyte summary - ANS no pholem or xylem- no vascular tissue, gametophyte is free living
and larger then sporophyte, sporophyte dependant on gametophyte for nutients , no roots,
instread have anchor,
2 classes of phylum tracheophyta - ANS lycopodiopsida-club mosses and polypidiopsida- ferns
and horse tails
lycopiodiopsida has - ANS microphills - one unbranched leaf vein, strobili- cones
bryopsida in NZ - ANS bretulia- stout red stems , antheridia in orange splash cups,
laves tappered at ends , also umbrella mosses,
polytrichopsida in NZ - ANS hair cap mosses, stiff efect unbranched stems, dark green redish
leaved with point at end
sphanginopsida in NZ - ANS pale green to yellow brown or pinkish, leaf tip rounded,
swampy areas, branch leaves wide or concanve
types of stele - ANS protosteele solid cylinder of vascular tissue, siphonostele has pith no
leaf gaps, siphonosteele with leaf gaps, eusetele is system of discrete strands of vasculat
tissue around the pith
plant reproductive cycle 1 - ANS 1- gametophyte produces hapliod gametes bt mitisos , 2-
two gamets fertalise nd form diploid zygote, 3 zygote developes into spyrophyte, 4-
sprophyte produces spores, 5-spores develope into multicellular gametophytes
gametophyte - ANS the gamete-producing and usually haploid phase, producing the zygote
from which the sporophyte arises.
sporophyte - ANS the asexual and usually diploid phase, producing spores from which
the gametophyte arises.
bryophyte summary - ANS no pholem or xylem- no vascular tissue, gametophyte is free living
and larger then sporophyte, sporophyte dependant on gametophyte for nutients , no roots,
instread have anchor,
