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Question: Answered & Verified by Expert
In Polygonum,
BiologySexual Reproduction in Flowering PlantsNEET
Options:
  • A ovule is orthotropus with an endosporic embryo sac derived from a single chalazal megaspore
  • B ovule is orthotropus with an endosporic embryo sac derived from a single micropylar megaspore
  • C ovule is anatropus with an endosporic embryo sac derived from a single chalazal megaspore
  • D ovule is anatropus with an endosporic embryo sac derived from a single micropylar megaspore
Solution:
1535 Upvotes Verified Answer
The correct answer is: ovule is orthotropus with an endosporic embryo sac derived from a single chalazal megaspore
The 7-celled, 8-nucleated embryosac derived from a single chalazal megaspore was discovered by Strasberger in Polygonum. This is the most common type of embryo sac in angiosperms. The most common type of ovule in angiosperms is anatropus ovule. However, Polygonum has an erect or orthotropus ovule.

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