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Marine Botany > Definitions > Flashcards

Definitions Flashcards

(83 cards)

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1
Q

Hydrophyte

A

Live in water partial/full submersion

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2
Q

Xerophyte

A

Salt tolerant plant

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3
Q

Thallophyte

A

Plant that lacks roots stems and leaves

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4
Q

Algae

A

Thallophytes with chlorophyll a, lack covering of cells around reproductive cells

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5
Q

Allochthonous input

A

Input from an external source/different ecosystem

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6
Q

Thylakoid

A

Flattened vesicles, pigments are found in its membrane

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7
Q

Stroma

A

Space between inner membrane and thylakoids

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8
Q

Granum(grana)

A

Stacks of thylakoids

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9
Q

Pyrenoid

A

Carbon concentration mechanism for CO2 fixation

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10
Q

Chlorophyll

A

Green pigments

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11
Q

Carotenoids

A

Brown/Yellow/Red pigments

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12
Q

Phycobilins

A

Red/Blue pigments

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13
Q

P-E curve

A

Rate of photosynthesis over increasing light intensity

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14
Q

Plastid

A

Photosynthetic organelle

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15
Q

Chloroplast

A

Photosynthetic organelle with Chl a and b

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16
Q

Spore

A

Unicellular product of mt/me, must settle and grow

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17
Q

Gamete

A

Unicellular product of mt/me, must fuse or die

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18
Q

Sporophyte

A

Releases spores, diploid 2N

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19
Q

Gametophyte

A

Releases gametes, haploid 1N

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20
Q

Mitospore

A

2N spore from mitosis

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21
Q

Meiospore

A

1N spore from meiosis

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22
Q

Haplontic

A

1n thallus, only diploid stage is in zygote

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23
Q

Diplontic

A

2N thallus, only haploid stage is gametes “animal like”

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24
Q

Alteration of generations

A

Org. has separate multicellular diploid and haploid stages

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25
Diplohaplontic
A heteromorphic form of alt. of gen. where the 2n sporophyte is larger
26
Haplodiplontic
A heteromorphic form of alt. of gen. where the 1N gametophyte is larger
27
Isomorphic
A form of alt. of gen. where the 1N and 2N thallus are the same size
28
Unicell
Solitary cell, non/motile
29
Colony
Assemblage of individual cells, can be predictable/variable #, flagellated or non-motile
30
Filamentous, uniseriate or multi-
Daughter cells stay attached following division, form chain Uni- cells occur in single row Multi- several rows in a long. series, occur in one or two planes
31
Siphononous
One large multi-nuclear cell without crosswalls | Dead mans fingers (Codium)
32
Medulla
Unpigmented cells
33
Cortex
Pigmented cells
34
Parenchyma
Undifferentiated isodiametric cells, generated by a meristem | In any plane NOT FILAMENTOUS
35
Pseudoparenchyma
Interwoven filaments, resembles parenchyma
36
Polysiphonous
Tiers of vertically elongated cells, arranged transversely around central axis/siphon
37
Cortication
Outer covering of cells
38
Sorus (pl. sori)
Cluster of sporangia
39
Prostrate/Procumbent
Trailing on ground, non-erect
40
Foliose
Sheet of cells that are bladelike without a stipe
41
Monostromatic
One cell thick
42
Bladed
Flattened leaf like thallus, may have stipe
43
Stipitate
Having a stipe
44
Saccate
Sac-like
45
Pneumatocysts Catenate Singly
Large gas containing float In a series Appear as single
46
Midrib
Thickened longitudinal axis of flattened branch or blade
47
Midvein
Median line of cells, blade is thicker
48
Tubular
Tube of cells with hollow center
49
Branched
Axillary divisions
50
Saxicolous
Growing on rocks
51
Epipelic
Growing in sand or mud
52
Epiphytic
Growing on a plant
53
Epizoic
Growing on an animal
54
Anticlinal
Cell division perpendicular to algae surface
55
Periclinal
Cell division parallel to surface of plant
56
E
Irrandiance, energy falling on a flat surface
57
Euryhaline
Species handle wide salinity range
58
Stenohaline
Species survive narrow range of salinities
59
Littoral zone
Intertidal, area of tide change
60
Supralittoral
Above mean high water, rarely submerged
61
Sublittoral
Below mean low water, permanently submerged
62
Spring tide
Sun and moon in same plane, more extreme tidal change
63
Neap tide
Moon and sun perpendicular planes, minor tidal change
64
Inducible defense
Turn on and off
65
Constitutive defense
Always on
66
Allelochemicals
Compounds that function as antifouling agents or herbivore deterrents
67
Exploitative
Scramble for limiting resource
68
Interference
Interactions between organisms
69
Plantae
Group- plastid has two membranes due to primary endysymbiotic effect
70
Isogamy
Sexual fusion of flag. gametes, similar in size and shape
71
Anisogamy
Sexual fusion of flag. gametes, different sizes
72
Oogamy
Sexual fusion of flag. gamete and non flag. gamete (egg and sperm)
73
Holocarpic reproduction
Entire thallus turns into gametes
74
Trabeculae
Ingrowths of wall material(inc. support)
75
Sporangia
Structure where spores are found | Browns only
76
Gametangia
Structure where gametes are formed | Browns only
77
Unilocular(unangia)
All spores/gametes are produced in single compartment
78
Plurilocular(plurangia)
Divided into small chambers with one spore/gamete per chamber
79
Functional anisogamy
Gametes look the same but act differenty | Browns- F releases pheromone
80
Receptacle
Swollen fucoid tips, site of meiosis, contains conceptacles
81
Conceptacle | Monoecious/Dioecious
Chambers that store gametes | Male and female in same conceptacle(one house)/Male and female in different conceptacle(two houses)
82
Oogonia
Female reproductive cell with one or more egg
83
Antheridia
Male reproductive structure producing sperm

Marine Botany (2 decks)

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