Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Crop Prot > Symtoms > Flashcards

Symtoms Flashcards

1
Q

yellowing of normally green tissues caused by inadequate light

A

Etiolation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

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

A

Chlorosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

the presence usually on leaves of variegated pattern of green and yellow shades with sharply defined border.

A

Mosaic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

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

A

Mottling

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

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

A

clearing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

may be due to an infectious agent or to lack of water. Wilting caused by the latter is often temporary and the plant recovers upon the application of enough moisture unless the drought is prolonged and the plants dies.

A

Wilting

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

the disintegration and decomposition of host tissue. A dry rot is a firm, dry decay whereas a soft rot is a soft, watery decomposition. Any plant part may suffer from rot such as fruit rot, stem-end rot, blossom-end rot, stalk rot and root rot.

A

Rotting

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

a localized necrotic area also referred to as a lesion. Individual spots may be circular, angular or irregularly shaped. Several spots may run together or coalesce forming large necrotic areas.

A

Spot

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

a localized necrotic area also referred to as a lesion. Individual spots may be circular, angular or irregularly shaped. Several spots may run together or coalesce forming large necrotic areas.

A

Spot

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

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

A

Blight

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

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

A

Shot-hole

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

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

A

Canker

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

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

A

Mummification

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

the host’s juices exude or leak out from soft- rotted portions.

A

Leak

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

a drying backward from the tip of twigs or branches.

A

Die-back

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

definite depressions or pits are found on the surface of fruit’s, tubers, and other fleshy organs resulting in a pocked appearance.

A

Pitting

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

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

A

Resetting

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

premature falling of leaves, fruits and flower due to the early laying down of the abscises layer

A

Abscission

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

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

A

Phyllody

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

abnormal bending or curling of leaves caused by overgrowth on one side of the leaf or localized growth in certain portion.

A

Curling

21
Q

slightly raised, rough, ulcer- like lesions due to the over growth of epidermal and cortical tissues accompanied with rupturing and suberization of cell wall.

A

Scab

22
Q

rotting of seedlings prior to emergence or rotting of seedlings stem at an area just above the soil.

A

Damping-off

23
Q

an over growth of tissue formed in response to injury in an effort of the plant to heal the wound.

A

Callus

24
Q

clustering of roots, flowers, fruits or twigs around a common focus.

A

Fasciculation or fascination

25
Q

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

A

Blast

26
Q

a superficial brownish roughening of the skin or fruits, tubers or other fleshy organs usually due to the suberization of epidermal or sub epidermal tissue following injury to epidermis.

A

Russetting

27
Q

long, narrow necrotic lesions on leaves or stems.

A

Streak or strip

28
Q

long, narrow necrotic lesions on leaves or stems.

A

Streak or strip

29
Q

Caused by fungus showing black, leaf sunken, lesions in fruit

A

Anthracnose

30
Q

same as hypoplasia or dwarfing and distinguished stunting or retardation

A

Atrophy

31
Q

same as hypoplasia or dwarfing and distinguished stunting or retardation

A

Atrophy

32
Q

A big and asymmetrically- shaped, mark or blemish on leaves, flowers, and stem

A

Blotch

33
Q

White to brown patches found under the surface of the leaves, stems, and fruits. The patches are the fungi themselves in the family Peronosporaceae.

A

• Downy mildew

34
Q

White to brown patches found under the surface of the leaves, stems, and fruits. The patches are the fungi themselves in the family Peronosporaceae.

A

• Downy mildew

35
Q

• - A result of continuous irritation of a cell or a tissue . An overgrowth or deformity on tissues in commonly observed.

A

Enation

36
Q

Oozing out of bacterial masses to the surface of the invaded tissues or organs: perceived as droplets or as thin smudge on the external portion

A

Exudation

37
Q

swelling or overgrowth due to the increased of cell division . This distortion is always irregular in shape.

A

Gall

38
Q

Usually caused by fungi , tree infected with this is showing too much or extreme form of gum.

A

Gummosis

39
Q

A manifestation of overgrowth of a plants organ and tissues due to increased cell division

A

Hyperplasia

40
Q
  • A manifestation of overgrowth of a plants organ and due to abnormal cell enlargement
A

Hypertrophy

41
Q

Abnormal formation of numerous fine fibrous roots

A

•Hairy root

42
Q

a localized leaf, self limiting lesion

A

•Leaf spot

43
Q

•- Caused by an attacked of virus ; or typified by a spherical area of chlorosis with green at the middle

A

Ringspot

44
Q

typified by masses of dusky, granular and sometimes stinking spores.

A

Smut

45
Q

Symptoms of bacterial infection. It is due to the degradation of cells or tissues due to pathogens enzymes production resulting in cell maceration

A

• Soft rot

46
Q
  • Scotty leaves and fruit covering molded by the dark hyphae of fungi that inhabit the honeydew produced by insects liked aphids, and mealy bugs.
A

Sooty mold

47
Q

Typified by impressions on the plants stem due to viral infection

A

• Stem pitting

48
Q

Characterized by the appearance of black raised or flattened out a droplet of tar on leaves due to fungal bodies

A

• Tar spots

49
Q

Dense clustering of branches of woody plants. Abundant slender branches appear from a constrained portion in close bundles looking like broom

A

Witches broom

Crop Prot (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions