Q. 755.0( 2 Votes )

A, Band Care 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 a tiny animal which acts as a carrier of malarial parasite. It breathes and respires through a kind of tiny holes Rand air-tubes Sin 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) Organisms (i) Yeast (ii) Amoeba (iii) Mosquito

(b) (i) Ethanol (C2H5OH) (ii) Cell membrane (iii) Spiracles and (iv) Tracheae

(c) Organism B (Amoeba) and organism C (mosquito) undergo aerobic respiration.

(d) Organism A (yeast) undergoes anaerobic respiration and produce ethanol and carbon dioxide.

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