Bambacioni effect is seen in which type of embryo sac development

Options :
  1. Plumbago type
  2. Peperomia type
  3. Drusa type
  4. Fritillaria type

Answer and Explanation :-

Answer: Option 4


In fritillaria type, the embryo sac is biphasic and bipolar. At four nucleate stage the three chalazal nuclei of coenomegaspore fuse to form a triploid nucleus. This phenomenon of fusion is called Bambacioni effect.

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