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STD 11 - 3. Plant kingdom — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 3. Plant kingdom1 Mark
MCQ
Select the correct statement.
  • ✓
    Sequoia is one of the tallest trees.
  • B
    The leaves of gymnosperms are not well adapted to extremes of climate.
  • C
    Gymnosperms are both homosporous and heterosporous.
  • D
    Salvinia, Ginkgo and Pinus all are gymnosperms.
✓

Answer

Correct option: A.
Sequoia is one of the tallest trees.
a
(a) : Sequoia sempervirens is the tallest gymnosperm. The leaves of gymnosperms are well adapted to extremes of climate. This is the reason for gymnosperm to flourish in cold areas where instead of rain, snow is the source of water. Gymnosperms are heterosporous $i.e.$, produce two different kinds of spores­microspores and megaspores. Salvinia is an aquatic pteridophyte.

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