The function of filiform apparatus is to:
Correct answer: D. Guide the entry of the pollen tube
- A. Recognize the suitable pollen at the stigma
- B. Stimulate division of generative cell
- C. Produce nectar
- D. Guide the entry of the pollen tube
Explanation
In the ovule, the pollen tube is attracted by secretions of synergids. Usually, the pollen tube enters the embryo sac by passing into one of the two synergids and is guided by the filiform apparatus of the synergids in their movement. The pollen tube then breaks open and releases its contents into the embryo sac. Antipodals and synergids later degenerate.
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