CHEMICAL COORDINATION AND INTEGRATION https://www.facebook.com/sciencegajab/ visit for fb page HORMONES ARE • Non-nutrients chemicals • Intercellular messengers • Produced in trace amount. • Generally endocrine gland secretions are Hormones but some chemicals also considered as hormones which are not produced by endocrine glands. Human endocrine system Endocrine gland location – 1. Head --> Hypothalamus, Pituitary gland and Pineal gland 2. Neck --> Thyroid & Parathyroid 3. Thorax --> Thymus 4. Abdomen --> Pancreas & Adrenal gland 5. Pelvic region --> Ovary in female & Testis in Male (in scrotum) Non endocrine parts which secretes few hormones are Gastrointestinal tract, kidney, liver and heart THE HYPOTHALAMUS: • Present at Basal part of diencephalon (fore brain) • Made by several group of neurosecretory cells called NUCLEI which produce hormones • Its hormones regulate the synthesis and secretion of pituitary gland. • Nucl
BIODIVERSITY|Evolution of Biodiversity |Biodiversity classification |Biodiversity conservation strategies |Threats to Biodiversity |Biodiversity hotspots and their conservation |Biodiversity and Ecosystem services |Biodiversity and climate change | Sustainable management of biodiversity
BIODIVERSITY 1. BIODIVERSITY Sum total of diversity that exists at all levels of biological organisation. o Levels of biodiversity --> Genetic, Species and Ecosystem levels 2. GENETIC DIVERSITY : o A single species might show high diversity at the genetic level over its distributional range. o India has more than 50,000 genetically different strains of rice, and 1,000 varieties of mango. 3. SPECIES DIVERSITY: o The diversity at the species level. o For example, the Western Ghats have a greater amphibian species diversity than the Eastern Ghats. 4. ECOLOGICAL DIVERSITY: o At the ecosystem level, India, with its deserts, rain forests, mangroves, coral reefs, wetlands, estuaries, and alpine meadows has a greater ecosystem diversity than a Scandinavian country like Norway. 5. More than 1.5 million species have been recorded in the world, but there might still be nearly 6 million species on earth waiting to be discovered and named. o Of the named species, >