Question

The fertilization in angiosperms is

• A. Parthenogamous oogamy
• B. Zooidogamous oogamy
• C. Siphonogamous oogamy
• D. Siphonogamous zooidogamy

Hint:

"Siphon" refers to the tube (pollen tube). Higher plants (Seed plants) are Siphonogamous.

Answer 1

The Correct Option is C

Step 1: Understanding Fertilization Terminology:

• Oogamy: Fusion of a large non-motile female gamete (egg) with a small male gamete. This is characteristic of Angiosperms.
• Siphonogamy: The transport of male gametes to the female gamete through a **pollen tube**. This occurs in Gymnosperms and Angiosperms.
• Zooidogamy: Fertilization involving motile male gametes (swimming sperm), found in Algae, Bryophytes, Pteridophytes, and some Gymnosperms (e.g., \Cycas), but **not** in Angiosperms.

Step 2: Conclusion:
Angiosperms exhibit **Siphonogamy** (pollen tube carries sperm) and **Oogamy** (egg is fertilized). Thus, it is Siphonogamous oogamy.