Sexual Reproduction In Flowering Plant Question 47
Question: After penetrating stigmatic and styler tissues, the pollen tube usually grow down towards the egg because [CPMT 1985]
Options:
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 tube
C) It has no other passage to follow
D) It grows under control of nucleus
Show Answer
Answer:
Correct Answer: B
Solution:
In porogomy, filiform apparatus of synergids secretes, some chemotropically active substances, which direct the pollen tube towards micropyle of ovule.
BETA
