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तमिलनाडु बोर्ड ऑफ सेकेंडरी एज्युकेशनएसएसएलसी (अंग्रेजी माध्यम) कक्षा ८

Write the economic importance of gymnosperms. - Science

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प्रश्न

Write the economic importance of gymnosperms.

संक्षेप में उत्तर

उत्तर

  1. Woods of many conifers are used in the paper industries, for example, Pinus, Agathis.
  2. Conifers are the sources of softwood for construction, packing, and plywood industry example Cedrus, Agathis.
  3. Turpentine is an essential oil used for paint preparation extracted from the resin of Pinus. It is also used medicinally for relief from pain and bronchitis etc.
  4. Seeds of Pinus gerardiana are edible.
  5. Ephedrine is an alkaloid extracted from Ephedra. It cures asthma and respiratory problems.
  6. Araucaria bidwillii is an ornamental plant.
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अध्याय 17: Plant Kingdom - Exercises [पृष्ठ २०३]

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सामाचीर कलवी Science [English] Class 8 TN Board
अध्याय 17 Plant Kingdom
Exercises | Q VII. 4. | पृष्ठ २०३
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