Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

BOTANY > Lecture 13 - Seedless Vascular Plants > Flashcards

Lecture 13 - Seedless Vascular Plants Flashcards

(74 cards)

Start Studying
1
Q

What prevents desiccation?

A

Protective wall surrounding spores

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

What prevents evaporation?

A

Waxy cuticle

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

What do seedless vascular plants have for gas exchange?

A

Stomata

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

How is water and food conducted throughout the plant body?

A

Xylem and phloem

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

What do these plants have for support?

A

Lignin

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

Phenolic deposited in secondary cell wall does what?

A

Gives compressive strength and waterproofing

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

What are roots for in seedless vascular plants?

A

Roots for anchorage and water and mineral absorption

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

What generation is dominant in vascular plants?

A

Sporophyte dominant

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

What do more advanced vascular plants have?

A

A much reduced gametophyte

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

Most primitive vascular plants are?

A

Homosporous

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

What does homosporous mean?

A

Produce only one type of spore

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

Primitive vascular plants spores develop into:

A

Bisexual gametophytes

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

More advanced vascular plants are typically:

A

Heterosporous

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

Define heterosporous

A

Produce microspores and megaspores

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

Microspores develop into?

A

Male gametophytes

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

Megaspores develop into?

A

Female gametophytes

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

When were seedless vascular plants dominant?

A

~ 400-300 mya (from the Devonian to the Carboniferous periods)

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

What are the seedless vascular plants of today?

A

Ferns and fern allies

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

3 types included in lycophytes

A

Club moss, spike moss, quillwort

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

Another name for club moss

A

Lycopodium

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

Club mosses resemble large mosses but have what at their apex?

A

Have an elongate strobilus at their apex

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

Club Moss: Strobilus has ___________ that bear the sporangia

A

Sporophylls

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

What kind of sporous is lycopodium? Club moss

A

Homosporous

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

What is lycopodium’s (club moss) leaf type?

A

Leaves are microphylls

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
What does leaf type microphyll mean?
Small leaves that contain a single strand of vascular tissue
26
Another name for spike moss
Selaginella
27
What is Selaginella sporous type? spike moss
Heterosporous
28
Selaginella: where does the male gametophyte develop? spike moss
Inside the microspores
29
Selaginella: where does the female gametophyte develop? spike moss
Inside the megaspores
30
What's another name for quillwort?
Isoetes
31
What type of plant is club moss?
Lycophyte
32
What type of plant is spike moss?
Lycophyte
33
What type of plant is quillwort?
Lycophyte
34
What is isoetes? quillwort
Small aquatic plant
35
Isoetes leaves resemble what? quillwort
Porcupine quills
36
Another name for whisk ferns?
Psilotum
37
Psilotum: describe leaves, roots, and branches whisk ferns
No leaves or roots, dichotomously divided branches
38
Psilotum: where is sporangia produced? whisk ferns
At the ends of short lateral branches
39
Psilotum: what is whisk ferns sporous type? whisk ferns
Homosporous
40
Psilotum: what is the prothallus? whisk ferns
A nutritionally independent gametophyte
41
Psilotum: what does the prothallus produce? whisk ferns
Antheridia and archegonia
42
Psilotum: where do sperm swim from and to? whisk ferns
From antheridia to eggs inside archegonia
43
Psilotum: sperm is inside where? whisk ferns
Antheridia
44
Psilotum: eggs are inside where? whisk ferns
Archegonia
45
Psilotum: what does the diploid zygote develop into? whisk ferns
Develops into the sporophyte
46
Another name for horsetails?
Equisetum
47
horsetails Equisetum: the shoot is comprised of sections __________ ___ _________
Sections joined at nodes
48
Equisetum: what do sterile shoots have at each node? horsetails
Whorls of long, narrow leaves at each node
49
Equisetum: what does the fertile shoot lack? horsetails
Chlorophyll
50
Equisetum: the fertile shoot has a strobilus that bears what? horsetails
Sporangia
51
Equisetum: what do shoots have in their outer tissue? horsetails
Silica in outer tissue
52
What's an important fact about ferns?
Largest group of seedless vascular plants
53
What is the most conspicuous generation of ferns?
Sporophyte
54
Most of fern stem is an?
Underground rhizome
55
What is the leaf type of ferns?
Megaphylls and often pinnately compound
56
What is on the underside of fern leaves?
Sori
57
In ferns, each sorus consists of what?
Many sporangia
58
ferns: within each sporangium, what do spore mother mother cells undergo and produce?
Undergo meiosis, produce four haploid spores
59
ferns: what do sporangia have a layer of?
Unevenly thick walled cells called annulus
60
How do ferns expel spores?
Humidity drops, sporangium cracks, annulus snaps back and expels spores
61
What are ferns sporous type?
Homosporous
62
When do fern spores germinate and what do they grow into?
In moist location, grow into gametophyte
63
Describe fern gametophytes shape and sexuality
Heart-shaped, bisexual
64
Another name for fern gametophytes
Prothalli
65
What is one trait of fern prothalli?
Photosynthetic
66
What anchors the fern gametophyte?
Rhizoids
67
Where is archegonia in ferns?
On underside of prothalus at notched end
68
A single ________ is produced in each archegonium
Egg
69
Where are antheridia found in ferns?
On underside of prothallus but are scattered at The apex
70
What do fern antheridia contain?
Sperm
71
Where do fern sperm swim to start fertilization? Where do they fertilize?
Swim to archegonia, usually fertilize a different prothallus
72
ferns: what develops after fertilization?
A new diploid sporophyte
73
ferns: what develops a foot that penetrates the prothallus?
Embryo
74
ferns: what does the sporophyte use the gametophyte for?
For nourishment until it becomes self-sufficient

BOTANY (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions