Pollen tube growth is one of the most fascinating—and essential—phenomena in the life cycle of flowering plants. After a compatible interaction between pollen grains and the stigma surface, the pollen germinates and forms the pollen tube, which grows through the stigma, style, and transmitting tract to deliver the sperm cells to the ovule."
2) Although pollens of many species germinate in simple aqueous media, stigmas do not provide satisfactory sites for the germination of most foreign pollen... Stigmas not only provide the proper conditions for the germination of pollen from their particular species, they actively inhibit the germination of pollen of many unrelated species.
Answer:
Homologous pairs separate in first round of meiosis or meiosis 1
However,
sister chromatids separate in second round of meiosis or meiosis 2.
They would not break and they would come to earth and crush people
Answer:
If plants grow in soil containing worms, then plant growth will be greater, because worms help decompose organic matter and distribute it through the soil in a form that plants can use
