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CBSE, Biology
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CBSE 11 Biology
Chemical coordination and integration in the human body is primarily achieved through hormones produced by various endocrine glands, which regulate metabolic processes, growth, and various physiological functions. Hormones act as intercellular messengers, and their effects are mediated through specific receptors on target cells. The chapter discusses the structure, function, and mechanisms of action for major endocrine glands and their hormones, including the hypothalamus, pituitary, thyroid, and adrenal glands, along with their impact on health and disease.
CBSEBiologyGrade 11CBSE 12 Biology
The content dives into biodiversity, highlighting its various components—genetic, species, and ecological diversity—and discussing the critical need for conservation due to the alarming rates of species loss driven by human activities. It describes the patterns of biodiversity distribution, particularly the greater species diversity in tropical regions, and emphasizes the importance of biodiversity for ecosystem functionality and survival. Effective conservation strategies are outlined, stressing both in situ and ex situ methods to protect the rich biological heritage of Earth.
CBSEBiologyClass 12

