Treating the common cold during pregnancy. Many of my pregnant patients inquire as to what medication they can use when they experience symptoms of the common cold, such as cough, congestion, sneezing, and fever. I am hesitant to recommend over-the-counter cold remedies because I have heard conflicting information regarding the safety of these products.
Gametophytes. The gametophyte is the dominant phase in the life cycle of moss plants. This is the form of the plant most people are familiar with since it is often seen carpeting trees, rocks, and parts of the forest floor. Photosynthesis takes place in the gametophyte phase.
Unlike more advanced plants, mosses have a dominant haploid life stage. That is, the moss that you see is the gametophyte and only contains one set - rather than the normal two sets - of chromosomes. The haploid stage starts with a spore. This can either be a male or female spore. The male spore will develop into a mature gametophyte that contains structures to make male gametes.