FORESTRY
PLANT AND WOOD ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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red
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green
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pink
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orange
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Detailed explanation-1: -So, the correct answer is ‘Red and green’.
Detailed explanation-2: -Final answer: Option a. Red and Green. Q. A transverse section of stem is stained first with safranin and then with fast green following the usual schedule of double staining for the preparation of a permanent slide.
Detailed explanation-3: -The xylem is coloured red with safrinin and phloem green with fast green, whereas other colours are not given by safranin and fast green.
Detailed explanation-4: -In plant tissues, dyes stains the cell walls, as well as cell components. A common dye in plant histology is safranin, used to for staining lignified cell walls (secondary walls) and Alcian blue (or fast green) to stain non-lignified cell walls (primary cell walls).