MHT CET Biology question

After penetrating stigmatic and styler tissues, the pollen tube usually grow down towards the egg because [CPMT 1985]

(A)The egg cell attracts the pollen tube as they have dissimilar electric charge
(B)The filiform apparatus of synergids is believed to attract the pollen tubeCorrect
(C)It has no other passage to follow
(D)It grows under control of nucleus

Answer: (B)

Solution

The filiform apparatus of the synergids secretes chemotropic substances that attract the pollen tube towards the micropyle; the attraction is

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Question ID VK-039894