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BSAAS > CRP001 (SYMPTOMS) > Flashcards

CRP001 (SYMPTOMS) Flashcards

1
Q

premature falling of leaves,
fruits or flowers due to early
laying down of the abscission
layer

A

Abscission

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2
Q

premature falling of leaves,
fruits or flowers

A

Abscission

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3
Q

It causes dark, sunken
lesions on leaves, stems,
flowers, and fruits

A

Anthracnose

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4
Q

term applied to the
sudden death of young
buds, inflorescence or young
fruits.

A

Blast

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5
Q

flow of plant sap from
wounds.

A

Bleeding

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6
Q

An extensive, usually sudden,death of host tissue, such as leaf blight.

A

Blight

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7
Q

large, irregular spots on
leaves or fruits with necrotic
injury of epidermal cells.

A

Blotch

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8
Q

an overgrowth of tissue
formed in response to injury
in an effort of the plant to
heal the wound

A

Callus

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9
Q

an often-sunken necrotic
area with cracked border
that may appear in leaves,
fruits, stems and branches

A

Canker

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10
Q

yellowing caused by some
factor other than light such
as infection by a virus or a
mycoplasma

A

Chlorosis

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11
Q

abnormal bending or
curling of leaves caused by
over-growth on one side of
the leaf or localized growth
in certain portions

A

Curling

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12
Q

rotting of seedlings prior to
emergence or rotting
seedling stems at an area
just above the soil line

A

Damping-off

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13
Q

a drying backward from
the tip of twigs or branches.

A

Die-back

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14
Q

yellowing of normally green
tissues caused by inadequate
light

A

Etiolation

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15
Q

clustering of plant organs
around a common focus

A

Fasciculation or Fasciation

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16
Q

extremely tiny spots on
leaves, fruits, stems, etc.

A

Flecks

17
Q

are swollen masses of
abnormal tissue that range
in size from small to quite
large

A

Galls

18
Q

oozing out of viscid gum
from wounds in bark

A

Gumming or gummosis

19
Q

the host’s juices exudeor
leak out from soft-rotted
portions

A

Leak

20
Q

the presence, usually on
leaves, of variegated
patterns of green and yellow
shades with sharply defined
borders

A

Mosaic

21
Q

the variegation is less
defined than mosaic and the
boundaries of light and dark
variegated areas are more
diffused

A

Mottling

22
Q

an infected fruit is
converted to a hard, dry,
shriveled mummy

A

Mummification

23
Q

metamorphosis of sepals,
petals, stamens or carpels
into leaf-like structures.

A

Phyllody

24
Q

definite depressions or pits
are found on the surface of
fruits, tubers, and other
fleshy organs resulting in a
pocketed appearance

A

Pitting

25
Q

Infected plants displays
white powdery spots on the
leaves and stems

A

Powdery mildew

26
Q

shortening of the
internodes of shoots and
stems forming a crowding of
the foliage in a rosette

A

Rosseting

27
Q

disintegration and
decomposition of host
tissue

A

Rotting

Additional info:
Any plant part may
suffer from rot.
a. A dry rot is a firm, dry
decay
b. A soft rot is a soft, watery
decomposition.

28
Q

superficial brownish
roughening of the skin of
fruits, tubers or other fleshy
organs usually due to
suberization of epidermal or
subepidermal tissues
following injury to the
epidermis

A

Russetting

29
Q

commonly seen as
coloured powder, Plants may
appear stunted, chlorotic
(yellowed), or otherwise
discolored

A

Rust

30
Q

a perforated appearance of
a leaf as the dead areas of
local lesions drop out

A

Shot-hole

31
Q

symptoms appear at
flowering, and infected
plants are unable to produce
grain

A

Smut

32
Q

a localized necrotic area
also referred to as a lesion

A

Spot

Additional info:
Individual spots may be
circular, angular or
irregularly shaped

33
Q

long, narrow necrotic
lesions on leaves or stems

A

Stripe or Streak

34
Q

the leaf veins are
translucent or pale while the
rest of the leaf is its normal
color

A

Vein clearing

35
Q

development of
chlorophyll in tissues or
organs in which it is normally
absent

A

Virescence or greening

36
Q

may be due to an
infectious agent or lack of
water

A

Wilting

BSAAS (5 decks)

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