Introduction Flashcards

(50 cards)

1
Q

Harvested after being dug up from the ground

A

Peat/Sphagnum moss

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2
Q

Found due to peat harvest

A

Tollund Man

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3
Q

Where is the Tollund Man found today?

A

Silkeborg museum, Denmark

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4
Q

Why was the Tollund Man preserved?

A

Acidic and anoxic conditions underground contributed to by the Sphagnum moss

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5
Q

Divided plants into two groups

A

August Wilhelm Eichler

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6
Q

Two groups provided by Eichler

A

Cryptogamae and Phanerogamae

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7
Q

Cryptogamae

A

Fungi, algae, ferns, bryophytes

Reproduce via spores

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8
Q

Phanerogamae

A

Usual plants

Reproduce via seeds

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9
Q

Current plant classification (3 groups)

A

Non-vascular plants, vascular cryptogams, spermatophytes

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10
Q

Non-vascular plants include

A

Bryophytes

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11
Q

Vascular cryptogams include ____________ which have ____________, but do not produce ___________.

A

Pteridophytes, vascular tissues, seeds

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12
Q

Spermatophytes include (2 groups)

A

Gymnosperms, angiosperms

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13
Q

Green plants

A

Chlorobionta

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14
Q

Apomorphies of green plants:

A
  1. Cellulose
  2. Chlorophyll a and b present in chloroplasts
  3. Thylakoids in stacks (grana)
  4. True starch used as storage
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15
Q

Two sister groups that make up chlorobionta

A

Chlorophytes, streptophytes

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16
Q

Major apomorphy of streptophytes

A

Oogamy (gametes differentiated into eggs and sperm)

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17
Q

Differentiate the haplontic forms of reproduction:

A

Isogamy - undifferentiated gametes, same sizes

Oogamy - differentiated gametes, larger egg and motile sperm

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18
Q

Charales

A

Exhibits oogamy

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19
Q

Charophytes

A

More advanced group

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20
Q

Major apomorphy of charophytes

A

Presence of plasmodesmata (found at the primary wall and serves as connection for symplast transport)

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21
Q

Land plants

22
Q

Land plants are defined by the presence of:

A
  1. Embryo
  2. Cuticle
  3. Parenchyma
23
Q

Embryophytes were first colonized during what period?

A

Silurian period (400 mya)

24
Q

Haplodiplontic life cycle is also known as

A

Alternation of generations

25
Terminal portion of sporophyte is the _________/__________ with sporogenous tissue called ___________ that will undergo meiosis to produce _____________.
Sporangium/capsule, sporocyte, spores (haplontic)
26
The gametophyte is produced by the
Mitosis of spores
27
Female and male reproductive organs
Archegonium, antheridium
28
Sperm is nonflagellate in
Conifers, gnetales, angiosperms
29
First land plants
Bryophytes
30
(T/F) Bryophytes are a monophyletic group
False
31
Characteristics of bryophytes common to tracheophytes
1. Embryo develops within a multicellular reproductive organ 2. Spores covered with sporopollenin 3. Flavonoids 4. Chlorophyll a and b 5. True starch as storage 6. Spiral sperm bodies with two flagella
32
200 cm bryophyte
Fontalis novae-angliae
33
70 cm bryophyte
Dawsonia superba
34
1 cm bryophyte
Ephemerum minutissimum
35
Defining characteristics of bryophytes:
1. Small, compact 2. Slow growth 3. No vascular tissues 4. No lignin 5. No well defined meristematic tissues (apical cell)
36
Functional phloem located in the outer cortex
Leptoids
37
Functional xylem located in the central cylinder, elongated cells
Hydroids
38
Why are hydroids and leptoids not considered as xylem and phloem?
They do not have well defined cells such as tracheids, vessels, sieve tubes, companion cells, etc.
39
Functional leaves of bryophytes
Phyllids
40
Modified epidermal cells of bryophytes for anchorage
Rhizoids
41
Functional roots of bryophytes
Rhizoids
42
Differentiate hydration of vascular plants and bryophytes
Vascular plants - homoiohydric | Bryophytes - poikilohydric
43
Homoiohydric vs. Poikilohydric
Homoiohydric - hydration and transport controlled internally | Poikilohydric - external environment controls hydration (capillarity)
44
Dominant stage of bryophytes
Gametophytic
45
Sterile sheath of cells that protect the gametangia
Jacket cells
46
Example of liverwort with jacket cells
Marchantia
47
Bladder moss
Physcomitrium pyriforme
48
(T/F) Higher altitude = more bryophytes
True until 3,000-3,500 meters
49
Species ___________ with elevation and are usually found in the __________ of leaves and trees.
Increase, crown
50
Decaying vegetation used in Europe as fuel for cooking
Peat