ch 29 plant diversity I Flashcards Preview

Bio 121 spring 2014 > ch 29 plant diversity I > Flashcards

Flashcards in ch 29 plant diversity I Deck (39)
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1
Q

sporopollenin

A

in charophytes, a layer of durable polymer

prevents exposed zygotes from drying out

2
Q

alternation of generations

A

each generation gives rise to the other

3
Q

gametophyte

A

multicellular haploid, produces (by mitosis) of haploid gametes- egg and sperm, together fuse to make zygote

4
Q

sporophyte

A

mitotic division of the zygote produces diploid sporophyte

meiosis in mature sporophyte produces haploid spores

5
Q

embryophytes

A

another name for land plants

6
Q

sporocytes

A

diploid cells that undergo meiosis and generate haploid spores

7
Q

archegonia

A

female, eggs

8
Q

anthridia

A

male, sperm

9
Q

apical meristem

A

localized regions of cell division at the tips of roots and shoots

10
Q

cuticle

A

wax covering on epidermis

11
Q

stomata

A

specialized pores that support photosynthesis by allowing the exchange of CO2 and O2 between outside air and the plant

12
Q

vascular tissue

A

cells joined into tubes that transport water and nutrients throughout the plant body

13
Q

bryophytes

A

non vascular

14
Q

2 clades of vascular seedless plants

A

lycophytes (club mosses)

monilophytes (ferns

15
Q

1 clade of seed plants

A

embryo packaged w nutrients inside a protective coat

16
Q

gymnosperm

A

seeds not enclosed in chambers

17
Q

angiosperm

A

flowering

18
Q

protenema

A

germinationg moss spores produce a mass of green, branched, one cell thinck protenema that enhance the absorption of water and minerals

19
Q

gametophore

A

the mature gamete producing structure of a moss gametophyte

20
Q

rhizoids

A

anchors gametophytes

long, tubular single cells (liverworts and hornworts) or filaments of cells (mosses)

21
Q

foot

A

embedded in the archegonium, absorbs nutrients from the gametophyte

22
Q

seta

A

stalk, conducts these materials to the sporangium, also called a capsule, which uses them to produce spores by meiosis

23
Q

peristone

A

ring of interlocking, tooth like structures on the upper part of a moss capsule, often specialized for gradual spore discharging

24
Q

peat

A

sphagnum moss is a key component and partially decayed organic material

25
Q

xylem

A

conducts water and minerals

26
Q

tracheids

A

tube shaped cells that carry water and minerals up from roots

27
Q

lignin

A

strengthening polymer

28
Q

phloem

A

sugars, amino acids, and other organic products

29
Q

roots

A

organs that absorb water and nutrients from the soil

30
Q

leaves

A

increase surface area and are primary photosynthetic organs of vascular plants

31
Q

microphylls

A

small, spiral shaped leaves supported by a single strand of vascular tissue
only lycophytes

32
Q

megaphylls

A

branched leaves

all other vascular plants

33
Q

sporophylls

A

modified leaves that bear sporangia

34
Q

sori

A

in ferns, clusters of sporangia

35
Q

strobili

A

cone like structures of sporophylls

lycophytes and most gymnosperms

36
Q

homosporous

A

most seedless vascular plants, produce one type of spore

37
Q

heterosporous

A

2 types of sporangia and produces 2 kinds of spores

38
Q

megaspores

A

female

39
Q

microspore

A

male