Question

Raju kept some food items outside the refrigerator for a long time especially during the rainy season, he observes a cottony growth on them.
a. What is this growth called?
b. How does the growth take place?
c. What name is given to the Knob-like structures at the top of a thin stem?

Answer 1

Answer:

a. It is called fungus/ bread mould

b. They develop from spores

c.  The Knob - like structures are the sporangium, which contains the spores

Answer 2

Answer:

It is caused by the fungus Plasmopara viticola. The pathogen attacks all green parts of the vine, especially the leaves. Lesions on leaves are angular, yellowish, sometimes oily, and located between the veins. As the disease progresses, a white cottony growth can be observed on the lower leaf surface.