The neural system coordinates and integrates functions as well as metabolic and homeostatic
Movement is an essential feature of all living beings. Protoplasmic streaming, ciliary
Vertebrates circulate blood, a fluid connective tissue, in their body, to transport essential
Cells utilise oxygen for metabolism and produce energy along with substances like carbon
Plants unlike animals have no special systems for breathing or gaseous exchange. Stomata and
Green plants make their own food by photosynthesis. During this process carbon dioxide from the
Carbohydrates are optically active polyhydroxy aldehydes or ketones or
All organisms are made of cells or aggregates of cells. Cells vary in their shape, size and
Anatomically, a plant is made of different kinds of tissues. The plant tissues are broadly
Flowering plants exhibit enormous variation in shape, size, structure, mode of nutrition, life
Biological classification of plants and animals was first proposed by Aristotle on the basis of
The living world is rich in variety. Millions of plants and animals have been identified and
