Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

BOT 201 > 2* Growth > Flashcards

2* Growth Flashcards

1
Q

1* growth =

A

axial lengthening

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

2* growth =

A

lateral widening

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

most stems with 2* growth have a

A

eustele

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

vascular cambium produces

A

2* X (wood) & 2* P (inner bark)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

vascular cambium forms from

A

fascicular cambium (in the bundles) & the interfascicular cambium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

interfascicular cambium forms from

A

1* ray (parenchyma)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

fascicular cambium froms from

A

procambium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

fascicular cambium location

A

in vascular bundles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

in the pith ray…

A

…parenchyma despecializes & becomes meristematic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

vascular cambium is a type of

A

lateral mersitem (usually for the life of the organ)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

axial region function =

A

transport along the organ

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

radial region has

A

rays

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

rays function =

A

radial transport & storage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

in between rays =

A

axial regions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

rays continue into

A

2* P

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

pine wood axial regions =

A

ONLY tracheids (no vessels)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

pine wood rays are made up of (2)

A

parenchyma & short tracheids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

pine wood rays are…

A

…uniseriate = 1 cell thick

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

pine wood has large

A

resin ducts that look like vessels but ARE NOT VESSELS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

pine wood smaller diameter xylem cells helps

A

prevent cavitation (emboli)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

narrow xylem cells =

A

late wood (preparing for winter / low nutrient season)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

thick xylem cells =

A

early wood (spring / high nutrient season)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

pine wood tracheids have

A

bordered pits

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

bordered pits of conifers have

A

margo & torus (most others don’t)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

pine/conifer/redwood wood =

A

soft wood

26
Q

soft wood =

A

wood without fibers

27
Q

bordered pit function

A

when negative pressure from air bubble (emboli) tries to enter another cell, pits have margo membrane (with thin microfibrils) and torus (middle) that block pits from air bubble entering

28
Q

margo and torus to limit

A

the spread of emboli

29
Q

2 types of flowering plant wood:

A

ring-porous

diffuse-porous

30
Q

ring porous wood only occurs in

A

plants with vessels (usually flowering plants)

31
Q

different sized larger “pores” in ring-porous wood =

A

vessels

32
Q

ring porous wood early wood vs late wood:

A
  • early: huge vessels / thick fiber cw’s (hard)

- late: big vessels / thin fiber cw’s (softer)

33
Q

early wood huge vessels means

A

higher chance of embolism

34
Q

in angiosperms (flowering plants), most cells in axial regions =

A

fibers (for support)

35
Q

in angiosperms, rays can be

A

multiseriate = >1 cell thick

36
Q

in angiosperms, all ray cells are

A

parenchyma

37
Q

diffuse porous wood examples

A

cottonwood, willows, tropical rainforest

38
Q

ring porous wood example

A

oak

39
Q

diffuse porous wood vessel sizes

A

are all about the same

40
Q

diffuse porous wood fiber cw’s & diameter

A

thickness changes with season

41
Q

diffuse porous wood vessels have

A

simple perforation plates on vessel elements

42
Q

diffuse porous wood majority of axial regions (longitudinal/radial) =
& radial regions =

A

fibers

& rays

43
Q

if all cells in the axial regions look the same =

A

pine/non-flowering wood

44
Q

2* phloem has same cells as

A

those in 1* phloem

45
Q

pine 2* P have

A

2* sieve cells in cw

46
Q

pine 2* P wood axial cells =

A

tracheids

47
Q

pine 2* P young stem shows

A

old cortex still

48
Q

pine 2* P radial regions =

A

ray parenchyma

49
Q

angiosperm 2* P have

A

STM + companion cells

50
Q

what is lost in 2* growth?

A

older bark (including 2* P)

51
Q

2* X vs 2* P growth amount ratio =

A

10 : 1

10 wood cells : 1 inner bark cell

52
Q

periderm function

A

replaces epidermis

53
Q

periderm is found in

A

woody plants

54
Q

periderm formation:

A

cork cambium (phellogen) initiates just inside epidermis

55
Q

cork cells are

A

dead at maturity

56
Q

cork cw’s have

A

suberin

57
Q

cork parenchyma aka

can be

A

phelloderm

photosynthetic

58
Q

cork parenchyma function

A

storage & photosynthesis

59
Q

cork cambium is often

A

bifacial

60
Q

cork cambium separates

A

cork (outside) & cork parenchyma (inside)

61
Q

mature periderm exhibits?

& especially where?

A

proliferation (rapid growth)

especially in cork cells

62
Q

mature periderm have

A

lenticels = openings in the periderm that allow for diffusion of gases in & out of stems)

BOT 201 (26 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions