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NEET2013BotanyAnatomy of Flowering PlantsActual

Select the correct pair amongst the following

Options

  1. ASpring wood – light colour, high density
  2. BSpring wood – dark colour, low density
  3. CAutumn wood – light colour, high density
  4. DAutumn wood – dark colour, high density

Correct answer

D. Autumn wood – dark colour, high density

Step-by-step solution

The yearly growth of secondary xylem is distinct in the area which experiences two seasons, one favourable (spring or rainy season) and the other unfavourable (autumn, winter and dry summer). The wood formed in a single year consists of two types of wood, spring wood and autumn wood. The spring or early wood is much wider than the autumn or late wood. It is lighter in colour and of lower density. Spring wood consists of larger and wider xylem elements. The autumn or late wood is dark coloured and of higher density.

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