問題一覧
1
Among the invertebrates, only insects have this characteristics
3 pairs of jointed legs
2
Where are the cerci located in insects
abdomen
3
Where are the wings found in insects?
thorax
4
Where are the genitalia found in insects?
abdomen
5
Where are the prolegs/pseudolegs located in "caterpillars?"
abdomen
6
Which of the following encloses the stylets in insects with piercing- Sucking mouth type?
labium
7
Which of the following is not a characteristic of arthropods?
radial symmetry
8
This sensory organ is not found among insects
chelicera
9
The first segment of the insect anternna is called
scape
10
The second segment of the insect antenna is called
pedicel
11
The shape of the majority of plant pathogenic bacteria is
rod
12
The shape of the majority of plant pathogenic bacteria is
rod
13
He developed the substage condenser for the microscope
Abbe
14
He showed that fire blight of pear and twig blight of apple were Caused by a bacterium
Thomas Jonathan Burrill
15
Which among the following does not belong to the five major Genera of phytopathogenic bacteria
Bacterium
16
This part is not found in the cell envelope of a Gram positive Bacteria
outer membrane
17
Antibiotic that interferes with peptidoglycan synthesis and prevents Cell wall synthesis in growing bacterial cells
penicillin
18
A bacterial surface appendage responsible for motililty
flagella
19
This part is missing in mollicutes
cell wall
20
Flagellation pattern characterized by the presence of a single Flagellum
monotrichous
21
Refers to the genetic material of bacteria
deoxyribonucleic acid
22
A fungal mycelium appearing on rotten fruit is an example of
sign
23
Aflatoxin is formed by
Aşpergillus flavus
24
Fungi in the Philippines reproduce mainly by forming
asexual spores
25
Fungal pathogens are often isolated using this technique
tissue planting
26
Group of microorganisms that can directly penetrate the intact host Surface
fungi
27
A fungal structure used for attachment to the host surface
appressorium
28
Some fungal pathogens form this structure to obtain nutrients from The host
haustorium
29
In the absence of the plants in the field, fungal pathogens will not Survive in
human beings
30
A characteristic of fungi
eukaryotic
31
The presence of different nuclei n the same mycelium is termed as
heterokaryosis
32
Some nematodes serves as And transmit plant viruses Which contributes in disease development.
vectors
33
For annual crops, the MAXIMUM number of nematodes parasites can Be recovered during
near harvest stage
34
This is the outer non-cellular layer cOvering the nematode body and Is shed-off during molting
cuticle
35
Refers to the possession of both functional male and female Reproductive organ
hermaphroditic
36
The term for eggs hatching within the uterus followed by EXPULSION Of living young
oviviparous
37
The casual organism of the root knot of most vegetables is
Meloidogyne incognita
38
This does nota characterize a root-feeding nematode
Causes death of plants as a typical symptom
39
Which among the following is nota type of root feeding nematodes
Necrotrophic parasite
40
Number of molting in plant parasitic nematodes
4
41
The infective stage of root knot nematode is during
Second stage juveniles
42
Which is not included in Koch’s postulates?
colonization
43
A yellowing caused by some factor other than light, such as by a Virus or mycoplasma
Chlorosis
44
Which of the following is a barrier to virus movement through the Plant?
Movement from the first infected cell
45
A seed with a virus is an important source of infection since the Seed introduces
The virus into the crop at a very early stage
46
The main components of plant viruses are
either DNA or RNA + protein
47
Plant pathology is the study of
plant diseases
48
He is considered the father of plant pathology.
Heinrich de Bary
49
A blight pathogen will affect the plant’s capacity to
Photosynthesize
50
The Autogenetic Theory of Disease states that:
Pathogens are outgrowths of the disease and not the cause
51
Rye may induce this kind of affliction
St. Anthony’s Fire
52
The pest population density in which the cost of control is much Higher than the expected cost of harvest of the protected crop
Economic injury level
53
The man-directed control of insect pests by employing the use of Natural enemies
biological control
54
The term given for crop destruction, injury or loss of value caused By the feeding activity of different pests
indirect damage
55
A biological control organism that usually lives inside the body of its Host and consumes only one host to complete its life cycle
parasite
56
The most destructive avian pest that attacks rice and other small Grains
Philippine weaver
57
A serious pest of corn that attacks all parts of the plant except the Roots
cutworm
58
Synchronous planting is an example of
cultural control
59
Mummification of fruits is an example of
symptom
60
A diseased plant is considered a
suscept
61
Which among the following does not describe what weeds are?
important
62
Which among the following is not true about the characteristics of Weeds?
not adapted to competition
63
Weeds that originate from other areas and are introduced to the Area where they are found
exotic
64
Weeds that grow and complete their life cycle under dry or wet Condition of the soil
upland
65
Lowland weeds with their roots attached to the soil but the shoots Are aerial/above-water
emerged
66
Weeds that reproduce mainly through seeds, and grow within a Year
annuals
67
Weeds which are members of Family Gramineae
grasses
68
Weeds that belong to Family Cyperaceae
sedges
69
Weeds with rounded hollow stems and fibrous root system
grasses
70
Weeds with triangular stems and parallel leaf venation
sedges
71
A toxic substance which is readily available and kills pest instantly
pesticide
72
A group of rodenticides that are slow-acting and are usually referred To as anti-coagulant rodenticides
chronic rodenticides
73
The ability of populations of pests to survive doses of an insecticide Which are normally lethal
insecticide resistance
74
An insecticide that is absorbed by and translocated in the plant and The insect acquire the poison through feeding
systemic insecticide
75
A liquid pesticide formulation that does not dissolve in water but is Dissolved in organic solvents
emulsifiable concentrates
76
A solid pesticide formulation applied undiluted where the active Ingredient is combined with inert ingredients such as clay to form Particles about the size of a coarse sugar
granule
77
Pesticide category symbolized by a red band and a skull and Crossbones
Category l
78
Which is not an expression of active unit in pesticide labels?
ppm
79
A universally accepted name given a pesticide by an appropriate Professional organization
common name
80
This is an effective seed treatment fungicide against corn downy Mildew
metalaxyl
81
In the chewing type of mouthparts, this component cuts and grinds The food
mandible
82
This body region bears the legs and wings of the insect
thorax
83
The basal segment of an insect leg
coxa
84
Termites have this type of antenna
moniliform
85
This type of antenna is found among scarabaeid beetles
lamellate
86
This elbow-like type of antennae is found among ants
geniculate
87
An insect that feeds on a number of unrelated species of plants
polyphagous insect
88
The collective term for parasitic and predatory insects
entomophagous insect
89
he growth stage/s of the rice plant that is/are most preferred by The rice bug
both b and c
90
Substances such as sex pheromones that lure insects and can be Used as a means of control
attractants
91
Protein synthesis occurs in
ribosomes
92
Bacteria cannot enter the plant through
intact host surface
93
Published the first book on pytobacteriology “Bacteria in Relation to Plant Diseases”
Erwin Frank Smith
94
The main means of reproduction of bacteria
Binary fission
95
The five-carbon sugar compound of DNA
RibOse
96
The building blocks of proteins is called
Amino acid
97
Metabolic pathway that converts glucose to pyruvate
Glycolysis
98
A group of pathogens that infect a set of plant varieties
Race
99
A virus that infects bacteria
Bacteriophage
100
A microbial product other than an enzyme which causes obvious Damage to plant tissues, and which is believed to be involved in Disease development
Phytotoxin