Examlex
What had the most influence in irreversibly changing the Earth's atmosphere?
Seeds
Embryonic plants enclosed in a protective outer covering, capable of developing into a new plant under appropriate conditions.
Prothallus
A gametophyte stage, particularly in ferns and lycophytes, that is free-living, photosynthetic, and produces the sexual organs where gametes are formed.
Moss Spore
The reproductive unit of mosses, capable of developing into a new individual without sexual fusion, important for moss propagation.
Microphylls
Small, simple leaves with a single unbranched vein, found in some of the earliest vascular plants.
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