What is the primary cause of powdery mildew in plants?
a) Bacteria
b) Fungi
c) Virus
d) Insects
Which disease is caused by a fungal pathogen and affects potato crops?
a) Black rot
b) Early blight
c) Downy mildew
d) Late blight
What is the main cause of rust disease in plants?
a) Bacteria
b) Fungus
c) Virus
d) Nematodes
Which disease is caused by a bacterial infection in tomatoes?
a) Tomato mosaic virus
b) Fusarium wilt
c) Bacterial wilt
d) Downy mildew
What is the cause of rice blast disease?
a) Bacteria
b) Fungus
c) Nematodes
d) Virus
Which virus is responsible for the mosaic disease in plants like cucumbers?
a) Tomato mosaic virus
b) Cucumber mosaic virus
c) Tobacco mosaic virus
d) Pea early browning virus
What is the cause of the wilting of plants, particularly in cucumbers and tomatoes?
a) Fusarium fungus
b) Nematodes
c) Bacterial wilt
d) Rust fungus
Which of the following causes root rot in plants?
a) Fusarium
b) Rust
c) Downy mildew
d) Phytophthora
What is the main pathogen responsible for the development of black spot disease on roses?
a) Bacteria
b) Fungi
c) Virus
d) Nematodes
Which disease is caused by a viral pathogen and affects citrus trees?
a) Citrus canker
b) Citrus greening
c) Tobacco mosaic virus
d) Pea early browning virus
What pathogen causes the disease known as “wilt” in cotton plants?
a) Fungi
b) Bacteria
c) Virus
d) Nematodes
Which type of pathogen causes downy mildew in plants?
a) Virus
b) Bacteria
c) Fungus
d) Nematodes
What is the primary cause of yellowing leaves in plants like corn?
a) Fungus
b) Bacteria
c) Virus
d) Nematodes
What type of organism causes the disease called “smut” in maize?
a) Bacteria
b) Fungus
c) Virus
d) Nematodes
What is the cause of the disease known as “corn blight”?
a) Fungus
b) Bacteria
c) Nematodes
d) Virus
Which pathogen is responsible for wheat rust disease?
a) Bacteria
b) Fungi
c) Virus
d) Nematodes
What is the cause of tomato blight?
a) Fungus
b) Bacteria
c) Virus
d) Nematodes
Which fungal disease is responsible for the wilting of plants like tomatoes and peppers?
a) Downy mildew
b) Fusarium wilt
c) Tomato mosaic
d) Late blight
Which pathogen is responsible for the disease known as “cherry leaf spot”?
a) Virus
b) Fungi
c) Bacteria
d) Nematodes
What is the cause of the condition known as “black rot” in cabbage?
a) Bacteria
b) Virus
c) Fungus
d) Nematodes
Which disease is caused by the bacterium Xanthomonas?
a) Citrus canker
b) Leaf spot
c) Bacterial wilt
d) Black rot
Which pathogen is responsible for the leaf curl disease in peaches and nectarines?
a) Bacteria
b) Fungi
c) Virus
d) Nematodes
What causes “blackened roots” in seedlings?
a) Fusarium
b) Bacterial infection
c) Root rot fungi
d) Leaf curl
Which disease is caused by the bacterium Ralstonia solanacearum?
a) Tomato blight
b) Bacterial wilt
c) Leaf spot
d) Downy mildew
Which type of pathogen causes the common “blight” diseases in beans?
a) Virus
b) Fungus
c) Bacteria
d) Nematodes
Which disease is caused by a bacterial infection that affects cucumbers?
a) Fusarium wilt
b) Powdery mildew
c) Downy mildew
d) Bacterial leaf spot
What type of pathogen is responsible for the disease known as “citrus canker”?
a) Fungi
b) Virus
c) Bacteria
d) Nematodes
Which disease, caused by the Fusarium fungus, affects bananas?
a) Banana mosaic
b) Panama disease
c) Leaf spot
d) Bacterial wilt
Which fungal disease is associated with the wilting of sweet potatoes?
a) Fusarium wilt
b) Powdery mildew
c) Root rot
d) Downy mildew
Which disease is caused by a fungal infection in strawberry plants?
a) Black rot
b) Anthracnose
c) Tomato blight
d) Peach rust
What is the primary cause of leaf curl disease in tomatoes?
a) Virus
b) Fungus
c) Bacteria
d) Nematodes
