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botany > plant kingdom > Flashcards

plant kingdom Flashcards

1
Q

haplontic/gametophytic stage

A

concerned with formation of haploid gametes

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2
Q

diplontic/sporophytic stage

A

concerned with formation of diploid spores

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3
Q

haplontic life cycle

A

gametophyte is dominant, sporophyte is reduced

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4
Q

examples of haplontic life cycle

A

most of algae

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5
Q

diplontic life cycle

A

dominant phase sporophyte, reduced phase gametophyte

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6
Q

examples of diplontic life cycle; exception

A

angiosperms, gymnosperm; fucus(brown algae)

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7
Q

haplodiplontic life cycle

A

dominant phase gametophyte, recessive phase sporophyte

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8
Q

examples of haplodiplontic life cycle; execptions

A

bryophyta, polysiphonia, ectocarpus, kelps, laminaria

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9
Q

diplohaplontic life cycle

A

dominant phase-sporophytic, recessive phase- gametophyte

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10
Q

examples of diplohaplontic life cycle

A

pteridophytes

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11
Q

avascular plants

A

bryophyta

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12
Q

non-spermatophyta

A

pteridophyta

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13
Q

cryptogamae plants

A

thallophyta, pteridophyta,bryophyta

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14
Q

phanaerogamae plants

A

angiosperms, gymnosperms

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15
Q

describe thallophyta

A

chlorophyll-bearing, simple, thalloid, autotrophic

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16
Q

habitat of thallophyta

A

fresh, marine water, found on moist stones, soil, wood, association with fungi(lichens) animals like bear, sloth

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17
Q

gametophyte in algae

A

photosynthetic, free living, independent

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18
Q

sporophyte in algae

A

non photosynthetic, dependent, reduced

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19
Q

isogameous ; flagellated, non flagellated examples

A

ulothrix(flagellated),spirogyra(non-flagellated)

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20
Q

anisogamous examples in algae

A

eudorina

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21
Q

oogamous in algae examples

A

volvox,fucus,polysiphonia

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22
Q

thallophyta found in colonies

A

volvox

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23
Q

thallophyta found in filamentous form

A

spirogyra,ulothrix

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24
Q

asexual reproduction in thallophyta takes place by

A

zoospore, aplanospore

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25
Q

describe zoospore

A

cell wall is absent, endogenous, motile

26
Q

describe aplanospore

A

endogenous, thick cell wall, non motile

27
Q

types of thallophyta

A

chlorophyceae(green algae), phaephyceae(brown algae,rhodophyceae(red algae)

28
Q

pigment in chlorophyceae

A

chlorophyll a, b

29
Q

cell wall of green algae

A

cellulose, hemicellulose, pectin

30
Q

reserve food material for green algae

A

starch in the form of pyrenoids containing protein body in the centre surrounded by starch granules

31
Q

half of the total co2 fixation is carried out by

A

algae

32
Q

examples of green algae

A

chlamydomonas,spirogyra,volvox,ulothrix,chara

33
Q

habitat of brown algae

A

Marine water

34
Q

pigment in brown algae

A

chlorophyll a,c

35
Q

filamentous brownn algae

A

ectocarpus

36
Q

branched, largest brown algae

A

kelps

37
Q

other pigmemts of brown algae

A

carotenoids, xanthophylls

38
Q

brown pigment in brown algae

A

fucoxanthin

39
Q

reserve food material of brown algae

A

laminarin, mannitol

40
Q

vegetative cells of brown algae have a

A

gelatinous, hydrocolloid coat of algin

41
Q

describe algin

A

good water holding capacity

42
Q

brown algae have root like steadfast

A
43
Q

the protoplast of brown algae contains

A

plastids, centrally located vacuole, nucleus

44
Q

brown algae have stalk like

A

stipe

45
Q

brown algae have l leaf like

A

frond

46
Q

asexual reproduction in most brown algae

A

biflagellated zoospores, pear shaped, two unequal laterally attached flagella

47
Q

union of gametes in brown algae taked place

A

in water or inside oogonium

48
Q

examples of brown algae

A

ectocarpus,kelps, laminaria, dictyota, sargassum, fucus

49
Q

laminaria and fucus are a rich source of

A

iodine

50
Q

pigmemts in red algae

A

r-phycoerythrin

51
Q

majority of red algae are; greater concentrations are found in

A

marine; warmer areas

52
Q

thallus of red algae

A

multicellular

53
Q

chlorophyll present in red algae

A

a,c

54
Q

reserve food material; similar to

A

floridean starch; similar to amylopectin, glycogen in structure

55
Q

most advanced body organisation in algae

A

red algae

56
Q

cell wall of red algae

A

agar, carrageen,funori

57
Q

what is agar used for

A

tissue culture

58
Q

what is agar used for

A

tissue culture

59
Q

what is carrageen used for

A

thicknener

60
Q

what is funori used for

A

adhesive

61
Q

are motile structure found in red algae

A

no

62
Q

examples of red algae

A

polysiphonia, porphyra, gracilaria, gelidium

botany (4 decks)

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