Showing posts from September, 2021
NCERT QUESTIONS WITH ANSWERS BIODIVERSITY AND CONSERVATION
NCERT QUESTIONS WITH ANSWERS MICROBES IN HUMAN WELFARE
NCERT QUESTIONS WITH ANSWERS HUMAN HEALTH AND DISEASES
NCERT QUESTIONS WITH ANSWERS EVOLUTION
NCERT QUESTIONS WITH ANSWERS MOLECULAR BASIS OF INHERITANCE
NCERT QUESTIONS WITH ANSWERS PRINCIPLES OF INHERITANCE AND VARIATION
NCERT QUESTIONS WITH ANSWERS REPRODUCTIVE HEALTH
NCERT QUESTIONS WITH ANSWERS HUMAN REPRODUCTION
EXAM CAPSULE Biology PowerPoint Presentations 💥Plus Two💥 To download, Click on each chapter. Part-1 Botany 👉 1. Reproduction in organisms 👉 2. Sexual reproduction in flowering plants 👉 3. Strategies for…
EXAM CAPSULE Biology PowerPoint Presentations 💥Biology Exam Capsule PPT for Plus One💥 Part-1 Botany 👉 Biological classification 👉 Plant kingdom 👉 Morphology in flowering plants 👉 Anatomy in flowering plants …
NCERT QUESTIONS WITH ANSWERS PDF DOWNLOAD
NCERT QUESTIONS WITH ANSWERS PDF DOWNLOAD
NCERT QUESTIONS WITH ANSWERS PDF DOWNLOAD
NCERT QUESTIONS WITH ANSWERS PDF DOWNLOAD
NCERT QUESTIONS WITH ANSWERS PDF DOWNLOAD
NCERT QUESTIONS WITH ANSWERS PLANT GROWTH AND DEVELOPMENT
NCERT QUESTIONS WITH ANSWERS PDF DOWNLOAD
NCERT QUESTIONS WITH ANSWERS PDF DOWNLOAD
NCERT QUESTIONS WITH ANSWERS RESPIRATION IN PLANTS
NCERT QUESTIONS WITH ANSWERS PHOTOSYNTHESIS
NCERT QUESTIONS WITH ANSWERS MINERAL NUTRITION
NCERT QUESTIONS WITH ANSWERS TRANSPORT IN PLANTS
NCERT QUESTIONS WITH ANSWERS PDF DOWNLOAD
NCERT QUESTIONS WITH ANSWERS PDF DOWNLOAD
NCERT QUESTIONS WITH ANSWERS ANATOMY OF FLOWERING PLANTS
NCERT QUESTIONS WITH ANSWERS PDF DOWNLOAD
NCERT QUESTIONS WITH ANSWERS PDF DOWNLOAD
NCERT QUESTIONS WITH ANSWERS PDF DOWNLOAD
NCERT QUESTIONS WITH ANSWERS PDF DOWNLOAD
NCERT QUESTIONS WITH ANSWERS PLANT KINGDOM
NCERT QUESTIONS WITH ANSWERS BIOLOGICAL CLASSIFICATION
NCERT QUESTIONS WITH ANSWERS The Living World
EVOLUTION AND CLASSIFICATION Evolutionary relationships of the species can be worked out by identifying hierarchies of their characteristics.
SPECIATION Minor genetic changes occurring in a population is called microevolution. They change common characteristics of a species. It cannot explain formation of new species.
EVOLUTION Sexual reproduction and errors in DNA copying lead to variation. Its consequences are illustrated below:
Heredity (inheritance) is the transmission of characters from parents to offspring. Evolution is the change in the characteristics of a species over several generations.
Reproduction in Human Beings In early teenage, the appearance and proportions of body change and new features and sensations appear. These changes indicate the sexual maturation.
SEXUAL REPRODUCTION Why Sexual Mode of Reproduction? It is the reproduction in which both sexes (male & female) are needed to produce new generations. The errors during DNA copying creates variations.
MODES OF REPRODUCTION USED BY SINGLE ORGANISMS The modes of reproduction by various organisms depend on their body design.
Reproduction is the production of offspring that are biologically similar to the parent organism.
7. CONTROL AND COORDINATION HORMONES IN ANIMALS (ENDOCRINE SYSTEM) Electrical impulses can instruct only few tissues to prepare for an activity. So, in animals, there is another way of control & coordinat…
7. CONTROL AND COORDINATION COORDINATION IN PLANTS Plants have no nervous system or muscles. But they can respond to stimuli.
7. CONTROL AND COORDINATION In organisms, many movements are responses to changes in the environment or to use changes in environment. E.g.
6. LIFE PROCESSES TRANSPORTATION It is the process of movement of water and other molecules to the concerned parts of the organism.
6. LIFE PROCESSES EXCRETION Excretion is the process of removal of harmful metabolic nitrogenous wastes from the body.
6. LIFE PROCESSES RESPIRATION It is the oxidation of the food material in cells to release energy for various life processes.
6. LIFE PROCESSES Organisms show many properties such as movement (growth-related or not). But the visible movement is not a defining characteristic of life because a plant may not grow visibly and some animals can breathe …
6. LIFE PROCESSES NUTRITION It is the process of transfer of energy source (food) from outside the body to the inside.
5. PERIODIC CLASSIFICATION OF ELEMENTS MAKING ORDER OUT OF CHAOS – THE MODERN PERIODIC TABLE Henry Moseley (1913) showed that the atomic number (Z) is a more fundamental property than atomic mass.
5. PERIODIC CLASSIFICATION OF ELEMENTS MAKING ORDER OUT OF CHAOS – MENDELÉEV’S PERIODIC TABLE Dmitri Ivanovich Mendeleev (1834-1907, a Russian chemist) was the most important contributor to the development …
5. PERIODIC CLASSIFICATION OF ELEMENTS The elements a re the substances that contain only one type of atoms. At present, 118 elements are known. Of these, only 94 are naturally occurring.
3. METALS AND NON-METALS CORROSION - Silver articles become black after some time when exposed to air. This is because it reacts with sulphur in the air to form a coating of silver sulphide.
3. METALS AND NON-METALS OCCURRENCE OF METALS - The earth’s crust is the major source of metals.
3. METALS AND NON-METALS HOW DO METALS AND NON-METALS REACT? - Noble gases have a completely filled valence shell. So they show little chemical activity.
