The passage of undigested food material from the body by way of the anus is called ..........

Q. is the process of removal of undigested food material from the body.

Q. ____________ is the process of removal of undigested food material from the body.

Q. In Paramecium undigested food is eliminated from the body through

Q. The process by which undigested substances are removed from the body is called __________

Q. 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?