Long answer short- to reproduce cells.
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.
Genotype is the genetic constitution of an individual organism.
For example<span>, two organisms that have even the minutest difference in their genes are said to have different </span>genotypes<span>.</span>
Just took the test, the answer was 100, not 2
Following two cycles are the most closely related in their role in sustaining life are <span>carbon and oxygen
all</span><span> living thing need carbon because to perform properly. because carbon is found everywhere from the ocean to the sky to rocks. The movement of carbon is known as the carbon cycle
</span><span>Oxygen is very important to living organisms. The oxygen cycle have following steps. The oxygen cycle is interconnected with the carbon cycle because carbon and oxygen are combined in a molecule. The oxygen cycle consists of animals who inhale oxygen from the atmosphere and plants that release oxygen in the atmosphere.</span>
