Which of the following statements is false about filiform apparatus? (a) The synergids have spec...

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Which of the following statements is false about filiform apparatus?
(a) The synergids have special cellular thickenings at the micropylar tip called filiform apparatus
(b) It plays an important role in guiding the pollen tubes into the synergid
(c) Both
(d) Pollen tube stimulates the formation of filliform apparatus
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