Test Preparation on Plant Kingdom II - Biology Test Series for NEET - 2020

(b) Pteriodophytes are also known as 'Vascular
cryptogams'. The term 'Cryptogams' is made of 2 Greek
word, i.e., Kryptose, hidden + gamous, wedded, i.e.,
these are the plants which reproduce by means of
spores and do not produce seeds.

(c) Birbal sahani was a famous Indian palaeobotanist. He
established famous Birbal Sahani institute of
paleobotany in Lucknow (UP) and described
Williamsonia sewardiana.

(d) Due to protandrus (maturation of antheridia before
Archegonia) condition archegonia of same thallus do
not accept the antherozoids of same thallus. Therefore
self fertilization is not possible in Pteridophytes or
vascular cryptogames.

(a) Gametophyte of fern is exosporic, flat, green,
autotrophic, cordate (Heart shaped), multicellular, short
lived, small reduced, dorsiventral, free living
independent, nonvascular gametophyte called prothallus.