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Plant Kingdom — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYPlant Kingdom3 Marks
Question
What is the general structure of Pteridophytes?
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Answer

  1. The main plant body is a sporophyte which is differentiated into true root, stem and leaves. These organs possess well-differentiated vascular tissues.
  2. The leaves in pteridophyta are small (microphylls) as in Selaginella or large (macrophylls) as in ferns.
  3. The sporophytes bear sporangia that are subtended by leaf-like appendages called sporophylls. In some cases sporophylls may form distinct compact structures called strobili or cones (Selaginella, Equisetum).

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