Exam 3 Flashcards
studying (30 cards)
horsetails are primarily characterized by the presence of
silica in their cell walls
what role do vascular tissues (xylem & phloem) play in the adaptation of plants to land?
they transport water, minerals, and nutrients
ferns reproduce through spores. Where are these spores typically found?
on underside of the fonds
Which is true about life cycle of ferns?
they have a dominant sporophyte stage
in the alternation of generations, what’s diploid phase called?
sporophyte
what is the role of rhizoids in bryophytes?
anchorage and absorption
which is a true lycophyte?
clubmoss
which process leads to the formation of spores in the haploid platonic life cycle?
meiosis in the sporophyte
which part of the moss life cycle is dominant and photosynthetically active?
gametophyte
which feature of Cooksoma suggests it played a crucial role in the colonization of land by plants?
development of vascular tissue
seed dormancy an be an adaptation
increase the seed’s weight
the sticky part of a flower’s pistil, which catches pollen is called:
stigma
ephedrine is a stimulant that is derived from a member of the phylum
gnetophyta
in gymnosperms, fertilization of the ovule typically occurs
several months after pollination
which statement is true regarding the evolutions history of plants?
gymnosperms evolved before angiosperms
double fertilization produces a _ embryo and a _ endosperm
diploid, haploid
due to their pinnately compound leaves… which phylum are thought as type of palm?
Cycadophyta
what happens to the ovary after fertilization in angiosperms?
it becomes the fruit
which plant of flower’s stamen produces pollen?
anther
why is external water not essential for fertilization in seed plants?
pollen grains are transported by wind or an animal
a major distinguishing feature between monocot and eudicot stems is the organization of the
vascular tissue
spines in cacti are modified leaves that primarily serve what function
protection
In the annual rings of woody trees, how does the cell size within the xylem of the spring and summer wood compare to the fall and winter wood
the cells are larger
which root system typically has one main root that grows down vertically, with smaller lateral branches?
taproot system
