progymnosperm

ریشه

From the Greek 'pro-', meaning 'before', 'gymnos', meaning 'naked', and 'sperma', meaning 'seed'.

مثال

• Progymnosperms are believed to be the ancestors of seed plants.
• The study of progymnosperms provides insight into plant evolution.
• Progymnosperms were prevalent in the Devonian period.

ترکیب‌های رایج

Progymnosperm fossils Progymnosperm ancestors Progymnosperm evolution