Study the diagram below (a) (i) ldentify the organism illustrated in the diagram (i) Give two reasons for your answer
(b) (i) Name the parts labelled A to D (ii) State the function of one of the labelled parts
Explanation
(a) (i) The organism illustrated in the diagram is Spirogyra or Filamentous Alga (ii) Reasons for the identification (1) It is made up of more than one cell joined end to end (filament) (2) It has (spiral) chloroplast (3) It has pyrenoid in the chloroplast (b) (i) The parts labelled A to D are A = (spiral) chloroplast B= Nucieus C= Pyrenoid D= Mucilage (b) () The functions of the labelled parts are A = Photosynthesis or food manufacture B = Controls the activity of the organism C= Storage of food or starch or carbohydrate D = Prevention of desiccation or drying.