Question

1. what is formed during the double fertilization process to help the sperm reach the egg in the ovary? polar nuclei pollen tube stigma stamen

Explanation:

• Polar nuclei are involved in the formation of endosperm after fertilization, not in sperm transport.
• The pollen tube grows from the pollen grain (after landing on the stigma) through the style to the ovary, carrying the sperm cells to the egg.
• The stigma is the part of the flower that receives pollen, not a structure for sperm transport.
• The stamen is the male reproductive part (produces pollen) but not the structure that helps sperm reach the egg.

Answer:

pollen tube