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