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  • Which one of the following is a vascular cryptogam?  Option: 1 Ginkgo  Option:

Which one of the following is a vascular cryptogam?
 

Option: 1

Ginkgo
 


Option: 2

Marchantia
 


Option: 3

Cedrus
 


Option: 4

Equisetum
 


Answers (1)

best_answer

 

 

Pteridophyta -

  • Pteridophytes are first vascular and successful terrestrial plants with true roots, stem and leaves but no flowers, fruits and seeds.
  • These plants are mostly found in cool, damp, shady places. Some may also be found in sandy-soil conditions. 
  • The dominant stage in the life cycle of pteridophytes is sporophyte. It possesses roots, stem and leaves.
  • The sporophyte of pteridophytes possesses vascular tissue i.e. xylem and phloem.
  • In xylem, true vessels are absent but tracheids are found.
  • In phloem, companion cells and sieve tubes are absent, however, sieve cells are present.
  • The leaves in pteridophytes can be of two types i.e. they can be small, microphyllous without leaf gaps as in Selaginella and Lycopodium or they can be large macrophyllus as in Ferns like Dryopteris.

 Gingko and Cedrus are phanerogams. Marchantia is not vascular. Equisetum is a vascular cryptogam.

 

 

Posted by

HARSH KANKARIA

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