The term mechanical digestion refers to the physical breakdown of large pieces of food into smaller pieces which can subsequently be accessed by digestive enzymes. In chemical digestion, enzymes break down food into the small molecules the body can use.igestion begins in the mouth with the secretion of saliva and its digestive enzymes. Food is formed into a bolus by the mechanical mastication and swallowed into the esophagus from where it enters the stomach through the action of peristalsis.
The stigma is generally in the center of the flower and stands up on the style, taller than the surrounding anthers. It usually has a gelatinous or visceral appearance, which is slightly damp and furry.
A flower is a part of a plant. Flowers are also called the bloom or blossom of a plant. The flower grows on a stalk â a thin node â which supports it. Flowers have petals. Inside the part of the flower that has petals are the parts which produce pollen and seeds.Flowers are the reproductive structure of flowering plants, which are plants of the division Magnoliophyta, also called the Angiosperms. In many plants, a flower is its most colourful part.We say the plant 'flowers', 'is flowering' or 'is in flower' when this colourful part begins to grow bigger and open out.lowers are the reproductive structure of flowering plants, which are plants of the division Magnoliophyta, also called the Angiosperms. In many plants, a flower is its most colourful part. We say the plant 'flowers', 'is flowering' or 'is in flower' when this colourful part begins to grow bigger and open out.