Flashcards in Class 1 Deck (95)
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1
A plant is -- branch off the tree of life
one
2
plants have typical characters at the cell level: cellulose cell walls, -- and chloroplasts
vacuole
3
-- species of plants
250k
4
T/F: chloroplasts evolved way before plants
true
5
Goethe's -- scientist sells soul to devil to get fame
Italian Journey
6
Classic "unified plant" idea: Goethe's 'Ur-plant' all plants are variations on a single unified theme, and that each carries within it the -- for huge variation
potential
7
Modern "unified plant" idea: emphasis in much -- on 'model' plants, with genomes determined, functionally elucidated, modified
physiology
8
Arabidopsis (thale cress) has a small genome, sequenced in 2000, -- week life cycle, easy to propagate
6
9
used in classic genetic and molecular biology experiments (McClintock); important fast-growing crop
Zea mays (corn, maize)
10
model especially for flower developmental genetics
Antirrhinum (snapdragon)
11
other model plant species include brassica (cabbage, canola), --, tobacco, and rice
tomato
12
cell wall is rigid, made of cellulose, with --
proteins
13
primary cell walls are --, characteristic of young, growing cells
thick
14
model plants should be able to -- fast (easily propagated)
grow
15
plants have typical characters at the whole-plant level:
roots, leaves
16
secondary cell walls have deposited of -- so are up to several um thick and stronger
lignin
17
model plants should have -- fecundity
high
18
model plants should be -- to grow
cheap
19
model plants should be easy to -- for genetic experiments
manipulate
20
If a model plant's genome was --, it would be easier to discover, clone, and transfer genes
sequenced
21
Other important aspects of model plants are that it should be -- of most plants in terms of genetics and have variable phenotypes
representative
22
Does arabidopsis have phenotypic plasticity?
no
23
typical body = stem, -- and root
leaf
24
softer more flexible cell wall
primary wall
25
-- also bridges the cells
endoplasmic reticulum
26
vacuole is the -- compartment
storage
27
vacuole can press up against cell membrane/wall
hydrostatic pressure
28
outside the protoplasts, the cell walls also form a continuous space, a potential pathway
apoplast
29
all of the membranes within the cell are --
interconnected
30
