Plant Pathology Unit 1

Withering and dropping of a plant staring from leaves to growing tip occurs in

• Smut

• Spot

• Rust

• Wilting

Which disease is characterized by yellowing of leaves and stunted growth in plants?

• Chlorosis

• Powdery mildew

• Fungus

• Blight

Necrosis, True or False?

• True

• False

Fungi develop specialized structures that exert pressure to penetrate plant surfaces

• Appressoria

• Hyphae

• Stomata

• Mycelium

A plant that provides nutrition and environment for the survival and reproduction of a parasite is known as

(a)  

Parasite that is normally saprophytic but can become parasitic

• Obligate Parasite

• Facultative Parasite

• Ectoparasite

• Endoparasite

Arrival of pathogen on host is called as

• Invasion

• Symptom Expression

• Inoculation

• Penetration

Disease management using beneficial microbes to suppress pathogens

• Chemical control

• Genetic resistance

• Cultural control

• Biological control

What is the term for the visible signs of disease in a plant?

• Signs

• Infection

• Symptoms

• Pathogenesis

Which method involves rotating different crops to prevent disease?

• Cover Cropping

• Monoculture

• Intercropping

• Crop Rotation