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  • Jaybee Sanchez

    • 問題数 100 • 2024/08/31

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    問題一覧

  • 1

    Conditions caused by inanimate agents are also called

    physiological disorders

  • 2

    Which characterizes viroids?

    Tiny entities composed of stable and free ribonucleic acids That can infect plant cells

  • 3

    These pathogens are commonly disseminated by insects

    Ultramicroscopic, obligately parasitic entities that are made up of a nucleic acid core and a protein coat

  • 4

    This refers to the sequence of events that leads to and is involved In the production of disease

    Disease cycle

  • 5

    This occurs when the pathogen has become established in the Plant tissues and obtains nutrients from the host

    Infection

  • 6

    Which of the following is now a survival structure?

    Phanerogram seeds

  • 7

    What is the term for the plant disease epidemics that occur Throughout the world?

    Pandemic

  • 8

    Considered father of Philippine phytopathology and dean of Filipino Plant pathologists

    Gerardo Ocfemia

  • 9

    He invented the microscope

    Rebort Hooke

  • 10

    He was the first Filipino Acarologist who spearheaded the research On mites in the Philippines in 1961

    L.C. Rimando

  • 11

    The physical removal of insect pests from the infested plants is an Example of

    mechanical control

  • 12

    Includes all adverse effects exeted by the plant in the insects Survival, development and reproduction

    antibiosis

  • 13

    Which of the following rice pests possesses chewing type of Mouthparts during the destructive stage?

    stemborer

  • 14

    An insect which carries and transmits a Disease -causing organism to a plant

    vector

  • 15

    The causal agent of soft rot of vegetables is

    Pectobacterium carotovorum

  • 16

    The causal agent of bacterial wilt of tomato is

    Ralstonia solanacearum

  • 17

    The corn disease incited by Bipolaris maydis may be controlled by

    fungicides

  • 18

    A common symptom of diseases caused by fungi

    spot

  • 19

    The use of oil is a Type of method against insect pests

    physical

  • 20

    The effects of one plant on another plant due to the chemicals That it releases

    allelopathy

  • 21

    The term that collectively describes the effects of both competition And allelopathy

    interference

  • 22

    The point during the life cycle of a crop when it most affected with The competition by weeds

    critical period of competition

  • 23

    The weed density, higher than which significant yield losses will be Observed

    critical threshold level

  • 24

    The weed density and duration when the crop is most affected

    crop-weed competitive threshold

  • 25

    The process of decreasing weed population to minimize Competition

    weed control

  • 26

    The study of weeds and their control

    Weed Science

  • 27

    Chemicals that are used to kill weeds

    herbicides

  • 28

    The world’s worst weed based on distribution

    Cyperus rotundus

  • 29

    These genera of weeds resemble rice at its seedling stage

    Echinochloa

  • 30

    The component of a pesticide that act as surface active agents

    surfactant

  • 31

    The presidential decree number which created the Fertilizer and Pesticide Authority

    1144

  • 32

    The year when the FPA was promulgated

    1977

  • 33

    The color code of the least toxic pesticides

    green

  • 34

    Herbicides with the blue band belong to what category?

    3

  • 35

    How many categories of pesticides are there based on toxicity?

    4

  • 36

    The word ‘CAUTION’ is the signal word for what category of Pesticides?

    3

  • 37

    The chemical family to which 2,4-D belongs

    phenoxy

  • 38

    This group of insecticides inhibits the cholinesterase enzyme of Insect pests

    Carbamates

  • 39

    Buthachlor or Machete EC belongs to this group of herbicide

    amides

  • 40

    The anteriomost vein of an insect forewing is

    Costa

  • 41

    The Pterygote insects include the following except

    Odonata

  • 42

    Nephotettix virescens belong to the Suborder

    Hemiptera

  • 43

    The insect order characterized by having scales on its Membranous wings

    Lepidoptera

  • 44

    The third segment of the dorsal part of abdomen is

    T3

  • 45

    The injury caused by a “putakti” comes from this body region of The insect

    abdomen

  • 46

    The thrips belong to this order

    Thysanoptera

  • 47

    Human louse!’s life cycle is

    ametabola

  • 48

    Naiad is a part of this metamorphosis

    hemimetabola

  • 49

    Nymph is a part of this metamorphosis

    paurometabola

  • 50

    Fungal pathogens that do not produce any spores

    Rhzoctonia and Sclerotium

  • 51

    Macroconidia and microconidia are formed by

    Fusarium spp.

  • 52

    A character of hyphae that is found only in the basidiomycetous Fungi

    Clamp connections

  • 53

    An ascocarp in fungi with a pore at the top and the wall of its own

    Perithecium

  • 54

    Which is not a district characteristic of Class Loculoascomycetes of Fungi

    A single-walled ascus

  • 55

    Spores produced from fragmentation of hyphal cells

    Arthrospores

  • 56

    The primary reproductive structures of fungi are

    Spores

  • 57

    The Formae specialis isa sub-specific classification of fungi, which is based on

    ability to attack different genera of crop plants

  • 58

    Which among the following is not a fungi?

    Algae

  • 59

    Which is not a characteristic of true fungi?

    Cell wall composition is cellulose

  • 60

    This is the outer non-cellular layer covering the nematode body And is shed-off during molting

    cuticle

  • 61

    A feeding structure that distinguishes plant parasitic from non- Plant parasitic nematodes

    stylet

  • 62

    Where are the eggs of root-knot nematode deposited?

    in a gelatinous matrix

  • 63

    The typical life cycle of Meloidogyne incognita

    sedentary endoparasite

  • 64

    Which of the following is not typical of nematode injury to plants

    death of plant

  • 65

    Plant parasitic nematodes are diagnosed by examining

    soil and roots

  • 66

    What is the typical number of juvenile stages in the life cycle of a Nematode?

    4

  • 67

    These are nematodes which produce eggs that hatch after being Laid

    oviparous

  • 68

    Nematode species that require the presence of both male and Females for reproduction to Occur

    amphimictic

  • 69

    Nematodes possessing both functional male and female Reproductive organs

    hermaphroditic

  • 70

    Author of the “Germ Theory of Disease”

    Louis Pasteur

  • 71

    Proposed “The Sun Spot Cycle Theory” in relation to locust Outbreaks

    Uichanco

  • 72

    This is not a characteristic of plant viruses

    Inhabit intercellular spaces

  • 73

    This is the component of plant viruses

    All of the choices

  • 74

    A disease caused by a plant viroid

    Cadang cadang disease of coconut

  • 75

    This is not a morphological shape of plant viruses

    Branched filamentous

  • 76

    Which among the following may transmit plant viruses

    All of the choices

  • 77

    Which among the following are symptoms of a plant virus

    All of the choices

  • 78

    This is not a type of plant viruses according to persistence in their Insect vector

    Invasive viruses

  • 79

    This is not a method of plant virus diseases diagnosis.

    Culture of nutrient media

  • 80

    Which of the following pests is not an arthropod?

    golden Apple snail

  • 81

    Bactrocera dorsalis isa pest of this fruit crop

    mango

  • 82

    A cultural practice against pest utilized to enhance the activities And survival of natural enemies

    habitat diversification

  • 83

    The use of adhesive substance is a Pests

    physical control

  • 84

    Early harvest is a Type of control against pests

    cultural control

  • 85

    Cold storage could also be used against pests and is considered a Method of control

    physical control

  • 86

    Water management can be categorized under all methods of Control except

    chemical control

  • 87

    IPM employs a variety of tactics, and the least type of method that Could be used is

    chemical method

  • 88

    A category of pest cause no significant damage under the Conditions currently prevailing, however, this can be a key or Occasional pest if conditions in the field are disrupted

    potential

  • 89

    The term used for non-resident pests is

    migrant

  • 90

    This method involves manipulation of the cultural management Practices to suppress the weeds

    cultural

  • 91

    Grassy weeds (Poaceae) locks similar to sedges except that their Stem called culm is

    cylindrical

  • 92

    The hairy membranous outgrowth in between leafs heat and leaf Blade in grasses is called

    Ligule

  • 93

    A weed considered as a true-parasite

    Cuscuta sp

  • 94

    This is an example broad-leaf weed

    Commelina benghalensis

  • 95

    This is an example of a grass weed

    Digitaria setigera

  • 96

    Which among the following weed species is a perennial grass

    Imperata cylindrica

  • 97

    Which among the following weed species reproduces by seed Alone?

    Synedrella nodiflora

  • 98

    Which among the following weeds are spread easily by wind?

    Tridax procumbens

  • 99

    Major weeds of crops deposited in the soil seedbank are estimated

    70-90%

  • 100

    An adjuvant or surfactants that improve absorption of herbicide by Raising the humidity or spray film and leaf surface

    humectants

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