A, B and C are three living organisms. The organism A is a unicellullar fungus which can live without air. It is used in the commercial production of an organic compound P from molasses. The organism B is a unicellular animal which lives in water and feeds and moves by using pseudopodia. It breathes through an organelle Q. The organism C is an tiny animal which acts as a carrier of malarial parasite. It breathes and respires through a kind of tiny holes R and air-tubes S in its body.
(a) What are organisms (i) A (ii) B, and (iii) C ?
(b) Name (i) P (ii) Q (iii) R, and (iv) S
(c) Which organism/organisms undergo aerobic respiration ?
(d) Which organism/organisms undergo anaerobic respiration ?

Answer

(a) (i) Yeast (ii) Amoeba (iii) Mosquito (b) (i) Ethanol (ii) Cell membrane (iii) Spiracles (iv) Tracheae (c) B and C (d) A