This is a preview. Log in through your library . Abstract Nephrolepis exaltata cv. Bostoniensis, the Boston fern, exhibits extreme stem dimorphism. The plant has orthotropic, dictyostelic shoots which ...

When the female gametes in plants become fertilized, a signal from the sperm activates cell division, leading to the formation of new plant seeds. This activation can also be deliberately triggered ...

Considered from an anatomical point of view, these two species may be distinguished from each other by the following contrasting characters: R. virginica.-Roots tuberous where the shoots develop; no ...

Perhaps when it's time to add flowers to your garden, starting seeds is the first thing that comes to mind, but there are ...

For most living things, sexual reproduction has proven the best overall strategy to perpetuate a species in the rough-and-tumble, unpredictable fray of natural selection. With two partners combining ...

Reproduction in the animal kingdom has historically been sexual. Cloning the sheep Dolly in 1997 moved us closer to the possibility of duplicating other animals or humans asexually, but the practice ...

Seed structure with a large central cell in the center (cell nucleus in yellow) surrounded by the tissue of the mother plant (purple). The mature central cell (left) is in a quiescent state until ...

Question: What is it about plants that makes it possible for you to grow them from a cutting rather than having to always start them from seed? I’m planning to expand my garden this season and want to ...

Seeds are the end product of plant reproduction. Whether directly as food, or indirectly as animal feed, they provide around 80 percent of human calorie consumption. In the millennia since humans ...