Lecture 12 Flashcards
1
Q
What are cell walls made of?
A
Cellulose
2
Q
4 main groups of land plants?
A
- non vascular
- seedless vascular
- Gymnosperm
- Angiosperm
3
Q
Benefits of moving to land?
A
Spacious Sunlight unfiltered Larger atmospheric CO2 Few threats Lots of mineral
4
Q
Challenges?
A
Less water and need to resist gravity
5
Q
Traits shared with land plants and charophyes
A
- same typa nut
- Phragmoplast during cell division (phag is a wall)
- Rings of protein in plasma membrane
6
Q
Sporopollenin?
A
Tough polymer
7
Q
Waxy cuticle?
A
Epidermal waterproofing
8
Q
Stomata?
A
Allows gas exchange
9
Q
Embryo has specialized?
A
Placental cells that transfer nutrients
10
Q
Apical Meristems?
A
Undifferentiated tissue creating differentiated cells
11
Q
Gametophyte makes gametes through?
A
Mitosis
12
Q
Sporophyte creates spore through?
A
Meiosis
13
Q
Bryophytes are what?
A
Nonvascular plants that are not monophlyetic
14
Q
Bryophyte characteristics?
A
Only a few cells thicc
Very thin waxy cuticle
Lack xylem and phloem
15
Q
Often in bryophytes, plants are?
A
Either male or female
