Question

The organisms A, B and C can obtain their food in three different ways. Organism A derives its food from the body of another living organism which is called its D, without killing it. The organism B takes in the solid food by the process of ingestion, digests a part of this food and throws out undigested food in the process called E. The organism C obtains its food from dead and decaying plants.

(b) What is the organism like D called?

Answer 1

• The organisms like D are called hosts.
• Host is an organism that is infected with or is fed upon by a parasitic or pathogenic organisms.