modifications Flashcards

(83 cards)

1
Q

Tap root types

A

food storage, respiration purposes

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2
Q

food storage types

A

fusiform, conical root, napiform root

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3
Q

swollen in the middle and tapering towards the apex and base

A

fusiform

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4
Q

spindle shaped

A

fusiform

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5
Q

example of fusiform

A

Radish

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6
Q

root is broad at base and tapers towards apex like a cone

A

conical

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7
Q

example of conical

A

Carrot

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8
Q

swollen at the upper part of and then becomes soherical and sharply tapering at lower part

A

Napiform

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9
Q

examples of napiform

A

turnip, beetroot

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10
Q

halophyte examples

A

rhizpora, avicennia, sonneratia, heritiera

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11
Q

vrowing in swampy areas

A

halophytes

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12
Q

negatively geotrophic plants

A

halophytes

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13
Q

exchange of gases through what

A

pneumathodes, lenticels

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14
Q

Adventitious root types

A

food storage, mechanical support, epiphytic, sucking/haustoria

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15
Q

tyoes of food storage

A

Simple tuberous, fasciulated tuberous

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16
Q

get swollen and store food

A

simple tuberous

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17
Q

example of simple tuberous

A

sweet potatato

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18
Q

cluster arising from one point becomes thick and fleshy

A

fasciulated tuberous

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19
Q

example of fasciculated tuberous

A

dahlia and asparagus

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20
Q

types of mechanical support

A

prop roots, stilt roots

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21
Q

arise from horizontal branches and grow vertically downwards till the oenetrate in the soil

A

prop roots

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22
Q

secondary growth- act like pillars

A

prop roots

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23
Q

example of prop roots

A

banyan tree

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24
Q

arise from few lower nodes of weak stem of monocots

A

stilt roots

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25
obliquely downward groth
stilt roots
26
examples
maize and sugarcane, screwpine
27
frow on mango trees to ontain moisture from air
orchids- epiphytic
28
roots probided wid a membrane absorbent to absorb moisturw
velamen
29
other name for epiphytic
assimilatory roots
30
types of sucking / haustoria
partial parasite, and total parasite
31
penetrate in xylem. steal water inly
viscum album (partial)
32
penetrate in xylem as well as phloem. obtain food as well as water
cuscuta (total parasite)
33
types of modifications of stems
undrgeound, aerial, sub aerial
34
underground types
rhizome, stem tiber, bulb, corm
35
aerial types
stem tendrils, thorn, phyloclade, bulbil
36
sub aerial types
runner, offset/aquatic runner, underground runner, stolon
37
prostrate, dorsiventrally thickened.
rhizome
38
grows horizontally or obliquely
rhizome
39
examples of rhizome
ginger, turmeric
40
underground branches of stem. tips become swollen because of storage of food (starch)
stem tuber
41
axillary buds r known as
eyss
42
example of stem tuber
potata
43
highly reduced and discoid wid a presence of a whorl of leaves
bulb
44
examples of bulb
onions, garlic
45
underground spherical or sub spherical vertically hrowing
corm
46
example of corm
arbi (colocasia), amorohophallous (elephant foot)
47
develop from axillary buds slender and aoirally coiled
stem tendrils
48
has sensitive adhesive glands
stem tendrils
49
example of stem tendrils
gours (cucumber, pumpkin, watermelon) and grapevines
50
acillary bud get modified to protect from animals
thorns
51
examples of thorn
citrus, bougainvillea
52
stem performs photosynthesis contain chlorophyll
Phylloclade
53
examples of phylloclade
opuntia, euphorbia
54
axillary bud becomes fleshy and round
bulbil
55
helps in vegetative propagation
bulbil
56
examples of bulbil
agave, dioscorea
57
underground stem reach mew niches. older parts die and new r formed
runners
58
examples of runner
grass and strawberries
59
railway
runner
60
slender lateral branch arise from base of main axis grows aerially and then arch downwards. the terminal pokt gices rise to shoot and adventitious roots
stolon
61
bridge
stolon
62
examples of stolon
mint, jasmine
63
aquatic plants having lateral branches. wid short internodes node bears a rosette of leaves above and truft of roots below
offset
64
examplesof offset
pistia and eichhornia
65
lateral branches originate from basal portion of main stem from horizontal and the. come out obliquely
sucker/ underground runner
66
examples of sucker
banana, pineapple, chrysanthemum
67
types of modifications of leaf
stem tendrils, leaf spines, fleshy leaves, phyllode, adhesive and digestive organs, leaf hook
68
additional support for weak stems
leaf tendril
69
example of lead tendril
pea
70
defence agaisnt browsing animals
leaf spines
71
entire leaf in a spine
opuntia
72
margin becomes spine
agave
73
stipules modifies into spine
acacia
74
examples of leaf spines
cactus, opuntia, agave, acacia
75
the petiole becomes green and perfoms photosynthesis
phyllode
76
example of phyllode
Australian acacia
77
storage of food
fleshy leaves
78
example of fleshy leaves
garlic onion
79
digestion and absorption of insects
digestive and absorbing organs
80
examples of digestive and absorbing organs
pitcher plan, venus fly trap
81
terminal theee leaflet gets converted into three curved hooks
leaf hooks
82
anchorage to tree
leaf hooks
83
examples of leaf hooks
bignonia unguis cati (cats nail)