Biology
Microbes and Plant Diseases
1,118 Questions
Microbes and plant diseases examine the role of fungi, bacteria, and viruses in causing infections in plants and humans. Topics cover symbiotic associations like mycorrhiza, fungal structures, and specific agricultural pathogens. Practice these biology questions to master microbiology concepts for upcoming competitive examinations.
Fungal associationsPlant pathogensMicrobial structuresBacterial infections
Microbes and Plant Diseases Questions
-
Ascomycetes
-
Zygomycetes
-
Basidiomycetes
-
Deuteromycetes
A
Correct answer
Explanation
Fungi like yeast, neurospora and aspergillus belong to this group.
-
The nature of reproductive bodies
-
Cell wall material of hyphae
-
Type of pigment present in mycellium
-
All of these
A
Correct answer
Explanation
Fungi shows an unconventional trend that the complexity of the sex organs decreases with the higher groups.
-
Bread mold
-
Green mold
-
mushroom
-
pink bread mold
D
Correct answer
Explanation
Neurospora crassa, commonly known as the pink bread mold, has been a model organism for genetic studies since the 1940s, particularly for its role in the one-gene-one-enzyme hypothesis.
-
Zygospore
-
Oospore
-
Endospore
-
Hypnospore
B
Correct answer
Explanation
Oospore is the thick-walled zygote of certain algae and fungi, formed by fertilization of an oosphere.
-
Bunchy top of the banana
-
Potato leaf roll disease
-
Tobacco mosaic disease
-
All of the above
D
Correct answer
Explanation
Bunchy top of banana, potato leaf roll, and tobacco mosaic disease are all well-documented viral diseases that affect plants. Therefore, all of the listed options are correct.
-
Fimbriae
-
Pili
-
Flagella
-
All of the above
D
Correct answer
Explanation
Fimbriae, pili, and flagella are all surface appendages found on various bacteria. They serve different functions such as attachment, conjugation, and motility.
-
Animals
-
Bacteria
-
Virus
-
Fungi
-
Lichen
E
Correct answer
Explanation
The litmus is extracted from lichen plants found in the Tundra region.
-
Club root
-
Damping-off
-
Downy mildews
-
Crown gall
-
Leaf blister and leaf curl
D
Correct answer
Explanation
Crown gall is a serious bacterial disease that infects and kills grapes, roses, fruit trees, brambles, shade trees, flowers, and vegetables. Galls are rounded with rough surfaces and are made up of corky tissue.
-
Fire blight
-
Alternaria blight
-
Phytophthora blight
-
Cytospora canker
-
Nectria canker
A
Correct answer
Explanation
This bacterial disease affects apples, pears, fruit trees, roses, and small fruits. Infected shoots wilt and look blackened.
-
Fusarium oxysporum
-
Fusarium venenatum
-
Fusarium solani
-
Fusarium sterilihyphosum
-
Fusarium redolens
A
Correct answer
Explanation
Fusarium oxysporum is a fungal plant pathogen that causes Panama disease of bananas.
-
Cochliobolus sativus
-
Fusarium culmorum
-
Fusarium graminearum
-
Claviceps purpurea
-
Tilletia controversa
C
Correct answer
Explanation
Fusarium graminearum is a plant pathogen which causes fusarium head blight, a devastating disease on wheat and barley.
-
Diphtheria
-
Measles
-
Chickenpox
-
Tuberculosis
-
Ringworm
E
Correct answer
Explanation
This is the correct option, as ringworm is cause by a fungi.
-
Aspergillus
-
Chlamydomonas
-
Diatoms
-
Seaweeds
-
Plasmodium
A
Correct answer
Explanation
This is the correct option, as Aspergillus is a fungi.
-
mushroom
-
toadstool
-
yeast
-
puffball
-
rhizobium
C
Correct answer
Explanation
This is the correct option. The fungi of yeast is very small in size, and can be only seen with the help of a microscope.
-
Only a
-
Only a and b
-
Only b
-
Only b and c
-
Only c
E
Correct answer
Explanation
Diatoms is an example of mould fungi, is a false statement. Thus, it is the correct option. Diatoms is an example of an algae.