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Agriculture Exams (Agri Croppro) – Page 8
#140. A common media used for bacterial isolation is
A
PDA
B
TZCA
C
PDPA
D
None of the above
Show Answer
Answer:
PDPA
#141. Bacterial isolation can be accomplished using the
A
Baermann Funnel Technique
B
Tissue Planting Technique
C
Streak Plate Method
D
Slide Culture Technique
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Answer:
Streak Plate Method
#142. Which of the following crops can be a possible host for Ralstonia Solanacearum?
A
Banana
B
Potato
C
Rice
D
Eggplant
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Answer:
Eggplant
#143. The soft rot bacteria produces ________________ which makes it able to degrade the middle lamella and cause lysis of the cell contents.
A
Peroxidases
B
Catalase
C
Pectinases
D
Amylase
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Answer:
Pectinases
#144. Type of flagellation of Erwinia species.
A
Monotrichous
B
Peritrichous
C
Lophotrichous
D
Amphitrichous
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Answer:
Peritrichous
#145. Common bacterial plant pathogen in the Philippines that produces yellow and mucoid colonies in ordinary culture media.
A
Pseudomonas
B
Xanthomonas
C
Ralstonia
D
Agrobacterium
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Answer:
Xanthomonas
#146. Common isolation method of bacterial plant pathogens from plant tissues
A
Streaking
B
Tissue planting
C
Staining
D
Baiting
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Answer:
Streaking
#147. Causal agent of bugtok and moko disease of banana.
A
Fusarium oxysporum
B
Pectabacterium carotovorum
C
Fusarium oxysporum
D
Ralstonia solanacearum
Show Answer
Answer:
Ralstonia solanacearum
#148. Citrus greening or mottling is now believed to be caused by a:
A
Phytoplasma
B
Bacterium
C
Fungus
D
Virus
Show Answer
Answer:
Bacterium
#149. Fungal mycelium appearing on rotten fruit is a
A
Symptom
B
Sign
C
Pathogen
D
Disease
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Answer:
Sign
#150. Mummification of fruits is an example of
A
Sign
B
Suscept
C
Symptom
D
Host
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Answer:
Symptom
#151. A diseased plant is a
A
Pathogen
B
Parasite
C
Suscept
D
Abiotic
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Answer:
Suscept
#152. May not cause diseases in plants
A
Abiotic factors
B
Parasites
C
Infectious agents
D
Worms
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Answer:
Worms
#153. The corn disease incited by Bipolaris maydis may be controlled by
A
Insecticides
B
Antibiotics
C
Fungicides
D
Miticides
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Answer:
Fungicides
#154. Aflatoxin is formed by
A
Aspergillus flavus
B
Aspergillus Rhizopus
C
Aspergillus scabies
D
Aspergillus ipomeae
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Answer:
Aspergillus flavus
#155. Fungi I the Philippines reproduce mainly by forming
A
Sexual spores
B
Asexual spores
C
Mycelia
D
Endospores
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Answer:
Asexual spores
#156. Fungal pathogens are often isolated by
A
Serial dilution
B
Tissue planting
C
Spore trapping
D
Baermann funnel
Show Answer
Answer:
Tissue planting
#157. Quiescent or latent infection is often associated with
A
Soft rot disease
B
Die-back
C
Blights
D
Anthracnose
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Answer:
Anthracnose
#158. Bacteria cannot enter the host plant through
A
Stomata
B
Hydathodes
C
Lenticels
D
Intact host surface
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Answer:
Intact host surface
#159. Group of microorganisms that can directly penetrate the intact host surface
A
Fungi
B
Bacteria
C
Viruses
D
Viroids
Show Answer
Answer:
Fungi
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