Question

the special adaptation of bisexual flower for self pollination is​

Answer 1

The tree-living orchid Holcoglossum amesianum has a type of self-pollination mechanism in which the bisexual flower turns its anther against gravity through 360° in order to insert pollen into its own stigma cavity—without the aid of any pollinating agent or medium.

SO ANSWER IS HETEROGAMY OPTION B

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