Definition - What does Pariental mean?
Parietal is a type of plant placentation, which is the way the plant seed placenta gets divided inside the plant ovary in agiosperms. This occurs in gynoecium plants. Parietal (also known as parietal placentation) is most commonly found in an unilocular ovary that is syncarpous (both bicapillary and multi capillary). Cucumbers are an example of one of the many plants that undergo pariental placentation.
MaximumYield explains Pariental
Given that parietal placentation occurs in gynoecium plants, it is integral for plants that produce fruits and seeds. The term gynoecium is used to refer to the female characteristics in plants. Parietal placentation occurs in the plant's pistil or the place where ovules are produced.
Plant placentation is integral in the seed maturing process and parietal is one of the different types of placentation. In plant morphology, pariental placentation is the process in which the two plant carpels come together to ensure the ovules in the seed help develop the plant.
Although this is process involves a single chamber, it can appear to have two chambers due to the creation of a false septum in the fusing process.