Pond Ecosystem: An ecosystem is a biological community that is composed of different types of organisms interacting with each other as well as with the surrounding environmental conditions. We see a wide variety of living organisms living around us in different habitats such as land, oceans, forests, ponds, lakes, deserts, etc. All living organisms are
Structure of the Skin: Skin is the largest organ of our body that forms the protective covering of our body. It serves as a barrier between our body organs and the external environment. Beyond providing protection, it plays a crucial role in regulating body temperature. It possesses thermoreceptors and thereby serves as a sense organ.
Spinal Cord: The nervous system is a highly organised complex system that coordinates the activities of all body organs. The human nervous system has two contrasting functional subsystems, the central nervous system and the peripheral nervous system. We all know that the brain is the master organ of our body that gives the command for
The Search for Genetic Material: Mendel’s experiment on the pea plant explained the patterns of inheritance of different characteristics from their parents to offspring. Based on his experimental evidence, Mendel stated that there are certain factors responsible for the transfer of hereditary information or characteristics from their parents to offspring. These factors were later identified
Different Levels of Organisation in Human Body: The biological world is enormously diverse. There are a huge number of varieties of living organisms ranging from microscopic organisms to highly evolved complex organisms. Human beings are the most complex and highly evolved organisms that exhibit different levels of structural organisation. It also serves as one of
Higher animals possess an elaborated circulatory system that consists of a muscular and chambered heart, a network of blood vessels, and an extracellular fluid called the blood. The heart pumps the blood to the body organs. The mammalian heart comprises four chambers, i.e., two atria and two ventricles. The blood flows through the cardiac (heart)
Transcription: DNA contains information for the synthesis of specific proteins of the cell. DNA is located in the nucleus of eukaryotes and found in the form of nucleoids in prokaryotes. DNA does not move out from the nucleus to the site of protein synthesis, i.e., ribosomes (located in the cytoplasm), to directly guide the process.
Protein Synthesis: Proteins are essential for the maintenance of structural attributes and the functioning of all living cells and viruses. Protein comprises approximately 50% of cellular dry weight. A protein is a high molecular weight organic compound and is a biopolymer of amino acids that are joined together by peptide bonds. Even though proteins are made
Plant Water Relation: Independent of the species, plants obtain water from the soil that overcomes the metabolic necessities of plants. Therefore a large amount of water is continuously absorbed from the soil and moved through the plant. We all know that root hairs remain in direct contact with soil water and absorb water and minerals
Population Interaction: Organisms do not live as isolated individuals. Animals prefer to live in groups or colonies. Two or more populations of different species interact to form a biological community. In a biological organisation, both plants and animals are very closely related. It can be said that Population Interaction is one of the important operations