Pick out the odd one out stating the reason:
1. Ergot, Wilt, Leaf spot, Rust
2. Pigeon, Chicken, Fowl, Duck
1. Wilt.
Wilt is a plant disease caused by bacteria whereas remaining plant diseases are caused by fungus.
2. Pigeon
Pigeon is not reared in the poultry farm whereas other birds are reared for obtaining egg and meat.