Question

Antipodal cells are destroyed when pollen tubes enter chlazal end

Answer 1

Answer:

On reaching of pollen tube inside the embryo sac, the 2 male gametes are discharged through a sub-terminal pore in pollen tube. The contents of pollen tube are discharged in the synergid and the pollen tube does not grow beyond it in the embryo sac. Further the cytoplasm of pollen tube is restricted to chalazal end of this synergidal cell. Thus, antipodal cells are destroyed when pollen tubes enter chlazal end.

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Explanation:

Answer 2

Answer:

After pollen tube arrival, one of the two synergid cells degenerates . The final pollen tube cyto spike could represent discharge .When pollen tubes enter ovules lacking this signaling system, they continue to grow, forming a coil. Tube and synergid cell development, their synchronized destruction.

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