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STD 11 - 6. Anatomy flowering plants — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 6. Anatomy flowering plants1 Mark
MCQ
In an annual ring, the light coloured part is known as
  • ✓
    Early wood
  • B
    Late wood
  • C
    Heartwood
  • D
    Sapwood
✓

Answer

Correct option: A.
Early wood
a
Spring wood plus autumn wood of a year constitute annual ring. The spring wood (also called early wood) is light in colour and constitute major part of annual ring. The autumn wood (also called late wood) is darker in colour.

Wood consists of secondary xylem. The central hard, tough and darker region of wood constitutes heart wood while peripheral portion constitutes sap wood. But these are not specified in annual rings.

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