The discoverer of the pollen tube is $........$.

Which part functions as a landing platform for the pollen grains in flowering plants?

What is the function of the filiform apparatus during the entry of the pollen tube into the ovule?

$A$ long pollen tube is found in $.......$.

Which of the following statements is not correct?

$A$: Initial growth of the pollen tube takes place at the expense of food present in the stigma and style.
$R$: The pollen tube travels intracellularly and chemotactically.