Which among the following statements is incorrect about fungi ?

1. They are multicellular organisms except yeasts.
2. They are heterotrophic and are either parasitic or saprophytic.
3. They prefer cold and dry conditions to grow.
4. They are immobile unlike bacteria.

Yeast is used in the production of

1. Ethyl alcohol
2. Acetic acid
3. Cheese
4. Curd

The scientific name of white button mushroom is :

1. Volvariella
2. Aspergillus
3. Pleurotus
4. Agaricus bisporus

The entire mass of hyphae is termed as :

1. Sporangium
2. Sporangiophore
3. Both (a) and (b)
4. Mycelium