Plant kingdom NCERT

 PLANT KINGDOM

The plant kingdom comprises a diverse group of organisms that play a crucial role in sustaining life on Earth. Plants are multicellular, eukaryotic organisms capable of photosynthesis, converting sunlight into chemical energy. They exhibit remarkable variations in form, ranging from tiny mosses to towering trees. Plants provide oxygen, food, shelter, and numerous resources for humans and other animals. They also contribute to the planet's ecological balance by absorbing carbon dioxide and regulating the water cycle. In essence, the plant kingdom is a fundamental pillar of terrestrial ecosystems, supporting biodiversity and ensuring the well-being of our planet.

 Plant Kingdom

 Plantae includes all the plants. They are eukaryotic, multicellular, and autotrophic organisms. The plant cell contains a rigid cell wall. Plants have chloroplast and chlorophyll pigment, which is required for photosynthesis.

Plant kingdom NCERT

In the plant kingdom, is natural classification and selection system is developed.

At present organic process classification systems supported evolutionary relationships between the varied organisms area unit acceptable. This assumes that organisms' happiness to equivalent taxa has a typical ancestor. we have a tendency to currently use data from several different sources too to assist resolve difficulties in classification. These become a lot of necessary once there is no supporting fossil proof. Numerical Taxonomy that is now simply doled out exploitation computers relies on all discernible characteristics. variety and codes area unit allotted to any or all the characters and the data area unit is then processed. during this approach, every character is given equal importance and at the equivalent time, many characters are considered. Cytotaxonomy that's supported biological science data like chromosome variety, structure, behavior, and chemotaxonomy which uses the chemical constituents of the plant to resolve confusion, are also used by taxonomists recently.

Most plants are cellular organisms. inexperienced plants acquire most of their energy from daylight via chemical change by primary chloroplasts that are derived from endosymbiosis with eubacterium. Their chloroplasts contain chlorophylls a and b, which provide them their inexperienced color. Some plants are parasitic or mycotrophic and have lost the flexibility to supply traditional amounts of chlorophyll or to photosynthesize, however still have flowers, fruits, and seeds. Plants are characterized by reproduction and alternation of generations, though reproduction is additionally common.

Plant kingdom NCERT

There are concerning 320,000 illustrious species of plants, and of which the nice majority, some 260–290 thousand, turn out seeds. inexperienced plants offer a considerable proportion of the world's molecular atomic number 8 and are the idea of most of Earth's ecosystems. Plants that turn out grain, fruit, and vegetables conjointly type basic human foods and are domesticated for millennia. Plants have several cultural and different uses, such as ornaments, building materials, and writing materials, and, in nice selection, they need a supply of medicines and psychotropic medicine. The scientific study of plants is thought of as phytology, a branch of biology.