Ecosystem And Biosphere

Details

Non vascular plants (often referred to collectively as the bryophytes) include three groups: the mosses (Bryophyta), approximately 15,000 species; liverworts (Hepaticophyta), approximately 7500 species; and hornworts (Anthocerophyta), approximately 250 species.

The majority of fat digestion happens once it reaches the small intestine. This is also where the majority of nutrients are absorbed. Your pancreas produces enzymes that break down fats, carbohydrates, and proteins. Your liver produces bile that helps you digest fats and certain vitamins.

The ultimate cause of water movement in a plant stem against gravity is transpiration.

The group of pistils or carpels is collectively spoken off as a Gynoecium.

The part of the stamen where pollen is produced is called anther.

Sepals (collectively called the calyx) are modified leaves that encase the developing flower. They are sterile floral parts and may be either green or leaflike or composed of petal-like tissue.

A pistil typically consists of an expanded basal portion called the ovary, an elongated section called a style and an apical structure that receives pollen called a stigma.

Together, all of the petals of a flower are called corolla.

To perform photosynthesis, plants need three things: carbon dioxide, water, and sunlight.

Carbon and energy requirements are fulfilled by photosynthesis.

The energy from light causes a chemical reaction that breaks down the molecules of carbon dioxide and water and reorganizes them to make the sugar (glucose) and oxygen gas.

The unique feature of bryophytes compared to other green plant group is that it contains no xylem for conducting water through the plant, instead it conducts water and nutrients through the leaves. Therefore, these are termed as non vascular terrestrial plants.

Animals or organism floating on the surface of water is plankton.