plant anatomy
Why are adventitious roots not true roots?
Adventitious root types include those that grow from the stem of the plant, from the leaves, or from underground structures that are not roots.
what are ovulate cones
contains ovules when fertilized by pollen,become seeds
what do roots do
anchor and asorb water and minerals.
what do they lack
vascular tissue
what mutiples of petals do they have
mutiples of four or five
why do some plants explode their seeds out?
relies on a unique cell wall geometry in the seed pod.
why do single plant carries both male and female reproductive structures
they allow a plant to complete its life cycle with or without the action of pollinators
where is the cell division located in the apical meristem
The tips of the roots and stem.
what do they depend on
diffusion and osmosis
what structure do the veins look like
netlike array or pattern
Why is cohesion important to plants?
for the transport of water from the roots to the leaves in plants
what is a megasporangium
the structure in the certain spore bearing plants in which megaspores are formed
what two terms are used to transport water and, sugars
xylem,phloem
what do bryophytes begin life as
a haploid spore
mutiples of three
why is adhesion important to plants?
allows for the water to stick to the organic tissues of plants.
what is a microspore
small haploid structures that gave rise to the male gametophyte
what is cell walls
thick and reinforced with lignin
after devolped into a mature gametophyte what comes with it
root like rhizoids
what structure do monocot leaf veins like
parallel to one another
what role does the seed coat play in the plant?
to protect the embryo and to transmit information regarding the external environment.
what are non vascular plants called
bryophytes
why do plant now use the support of gravity
Because there no longer supported by water
what is a bryophyta
true mosses, liveworts and hornworts
what is a cotyledon
a leaf like structure that nourishes the plant embryo