Question

In Cycas, fertilisation occurs through.

• A. Isogamy
• B. Siphonogamy
• C. Zoidiogamy
• D. Both B and C

Answer 1

The correct option is D Both B and C

• Siphonogamy is a condition in plants in which pollen tubes are developed for the transfer of the male cells to the eggs
  
• Zooidogamy is a type of plant reproduction in which male gametes (antherozoids) swim in a path of water to the female gametes (archegonium)
• Cycas is the genus belonging to family Cycadaceae. Cycas is a very ancient genus of trees. It is noted that fertilization in cycas exhibit both siphonogamy (formation of pollen tube) and zoidiogamy (participation of ciliated male gametes). Hence In Cycas, fertilization occurs through. both siphongamy and zoidiogamy.
• So, the correct answer is 'Both B and C'.