Some Parasitism details

Parasitism

             A parasite is an organ living on another living organisms. It does not live on dead organism. A wide variety of plants and animals is parasitic in the mode of existence.

         1) Dodder is a highly specialised  parasitic plant. It twins up the stem of host. The dodder plant gets its food from the host by a specialised organ called haustorium. The haustorium enters into the tissue of host plant and absorbs nutrients.

           2) Plasmodium is a unicellular parasitic and coenocytic organism. It has two hosts, man and mosquito. It causes malarial disease to mankind. It lives in red blood cells of man.

           3) Ascaris lumbricoides is a common round worm found in the small intestine of human beings. It is one of the largest parasites growing about 25 cm to 35 cm in length. It has an unsegmented body with pointed ends. The posterior end of the female is straight and that of the male is curved like a hook. In small numbers, it does not cause serious discomfort to the host. In large numbers, This causes intestinal obstruction.