Question

Pollen tube of Cycos acts
(1) as an agent for carrying male gamete to the egg
(2) as a haustorium
(3) as endosperm
(4) as female cone

• A. 1,2 and 3 are correct
• B. 1 and 2 are correct
• C. 2 and 4 are correct
• D. 1 and 3 are correct

Answer 1

Answer: (B)

In Cycas, fertilization takes place by siphonogamy (spermatozoids being carried by pollen tube) and zooidogamy. Pollen tube also absorbs nutrients from nucellus, in this way, it also acts as a haustorium.