There are four tiny organisms A, B, C and D. The organism A is a parasitic protozoan which causes a disease known as kala-azar. The organism B is a microscopic single-celled animal which causes malaria disease in human beings. The organism C is a unicellular animal which can change its body shape according to need, it has no fixed shape. The organism D is also a unicellular animal which is slippet-shaped having a large number of tiny hair all around its body.
(a) Name the organisms A, B, C and D
(b) Name one characteristic body feature of organism A.
(c) Name the insect which carries organism Band transmits it from one person to another.
(d) What name is given to the asexual method of reproduction of
(i) organism A, and (ii) organism B?
(e) Where do organisms C and D live?
(a) A is Leishmania, B is Plasmodium, C is Amoeba and D is Paramecium.
(b) Leishmania (A) has a whip-like structure called flagellum at its one end.
(c) Female Anopheles mosquitocarries plasmodium (B) and transmits it from person to person.
(d) (i) Leishmania (A) reproduces by binary fission. (ii) Plasmodium (B) reproduces by multiple fission.
(e) Amoeba (C) and Paramecium (D) live in pond water.