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15 Cards in this Set

  • Front
  • Back
define cuticle, pores, and stomata
cuticle: wazy layer that retains water
pores: holes that allow exchange of gases
stomate: holes that opne and close
what are the 4 types/groups of plants? and examples of each
non-vascular(mosses),seedless vascular(ferns),gymnosperms(pines Key innovation=seeds),angiosperms(flower key innovation=fruit)
are non-vascular plants homopsorous or heterosporous?
homosporous because one part makes both the male and the female gamete
what are the 3 groups of non-vascular plants?
mosses, liver worts, and hornworts
what is dominant in the non vascular plants(the most commonly seen part)? is it n or 2n?
the gametophyte is dominant it is n
where are the sperm produced on the gametophyte of non vascular plants? where is the egg produced on the gametophyte?
sperm: antheridium
egg: archegonium
do non vascular plants need water to reproduce? and why are they limited to where they live?
yes, they only reproduce when water is present therefore they are limited to where they live they need to live in places where water is present and because they dont have a transport system this limits where they can grow as well
why are mosses limited in height?
because they have no vasculare tissue
what are 3 types of vascular tissue? what is needed to go up and what is needed to go down the transport system of vascular tissue?
roots, leaves, and shoots
H20 to go up through the xylem and glucose to go down the phloem
what are the two kinds of cells of the xylem?which one is only found in angiosperms? are these cells dead or alive?
-tracheids, and vessels
-dead therefore empty to move things around in
what supports the structure of the leave?
ligin and water
what is transportation cohesion? does this proccess require E from the plants?
-transportation=evaporation(C02 in H20 out),cohesion=water molecules stick together
-no it gets E from sun
how much of the water evaporates? how fast does the water move? how many liters of water are transpired a day?
- 90%
- 15m/hr
-200 liters
what happens in the phloem? what does it consist of?
-water pushes sugar(syrup) down and takes organic cmpds(sugars/products of photosynthesis) from leaves to roots
- sieve elements(stacked cells) and sieve plates(porous ends)
are the cells that make up the phloem alive or dead? how does it stay this way?
they are empty but alive but have no nucleus. a companion cell keeps it alivee and load sugar into the system