Question

Aquatic ancestry of bryophytes is evidenced by

• A. Their green colour
• B. Algae like protonema
• C. Many aquatic bryophytes
• D. Flagellated male gametes

Answer 1

The correct option is D Flagellated male gametes

While there are a few aquatic forms, Bryophytes are mostly land inhabitants. Considered the oldest of land plants, some distinct adaptations showcases the vital link of migration from aquatic to terrestrial environments. Of the distinct adaptations seen in Bryophytes, the development of gametangia to provide protection for gametes and the dependence on water for reproduction and survival points to its aquatic ancestry. The free-swimming flagellated male gametes, need water to transport them to the female gametes enclosed within archegonia. Hence the correct option is D.