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adventitious

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45 Terms

1

adventitious

describes an organ that grows in an unusual place, such as a roots growing from the side of a stem

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2

antheridium

male gametangium

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3

archegonium

female gametangium

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4

capsule

case of the sporangium in mosses

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5

charophyte

other term for green algae; considered the closest relative of land plants

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6

club mosses

earliest group of seedless vascular plants

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7

diplontic

diploid stage is the dominant stage

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8

embryophyte

other name for land plant; embryo is protected and nourished by the sporophyte

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9

extant

still-living species

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10

extinct

no-longer-existing species

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11

fern

seedless vascular plant that produces large fronds; the most advanced group of seedless vascular plants

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12

gametangium

structure on the gametophyte in which gametes are produced

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13

gemma

(plural, gemmae) leaf fragment that spreads for asexual reproduction

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14

haplodiplodontic

haploid and diploid stages alternate

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15

haplontic

haploid stage is the dominant stage

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16

heterosporous

produces two types of spores

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17

homosporous

produces one type of spore

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18

hornworts

group of non-vascular plants in which stomata appear

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19

horsetail

seedless vascular plant characterized by joints

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20

lignin

complex polymer impermeable to water

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21

liverworts

most primitive group of the non-vascular plants

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22

lycophyte

club moss

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23

megaphyll

larger leaves with a pattern of branching veins

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24

megaspore

female spore

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25

microphyll

small size and simple vascular system with a single unbranched vein

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26

microspore

male spore

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27

mosses

group of bryophytes in which a primitive conductive system appears

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28

non-vascular plant

plant that lacks vascular tissue, which is formed of specialized cells for the transport of water and nutrients

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29

peat moss

Sphagnum

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30

peristome

tissue that surrounds the opening of the capsule and allows periodic release of spores

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31

phloem

tissue responsible for transport of sugars, proteins, and other solutes

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32

protonema

tangle of single-celled filaments that forms from the haploid spore

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33

rhizoids

thin filaments that anchor the plant to the substrate

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34

seedless vascular plant

plant that does not produce seeds

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35

seta

stalk that supports the capsule in mosses

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36

sporocyte

diploid cell that produces spores by meiosis

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37

sporophyll

leaf modified structurally to bear sporangia

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38

sporopollenin

tough polymer surrounding the spore

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39

streptophytes

group that includes green algae and land plants

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40

strobili

cone-like structures that contain the sporangia

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41

tracheophyte

vascular plant

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42

vascular plant

plant containing a network of cells that conducts water and solutes through the organism

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43

vein

bundle of vascular tissue made of xylem and phloem

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44

whisk fern

seedless vascular plant that lost roots and leaves by reduction

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45

xylem

tissue responsible for long-distance transport of water and nutrients

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