Question

Which type of organisms obtains energy only from living host organisms and forms specialize structure called haustoria in fungi?
A. Biotrophs
B. Facultative saprophytes
C. Necrotrophs
D. Saprophytes

Answer 1

The type of organisms that obtain energy only from living host organisms and form specialized structures called haustoria in fungi are called **A. Biotrophs**. Biotrophs feed on living hosts and establish a symbiotic relationship, often using haustoria to extract nutrients without killing the host.