Learning Resource for CBSE students
Covers bio part of the syllabus
A biogeochemical cycle is a pathway by which a chemical substance moves through biotic (living world) and abiotic (lithosphere, atmosphere, and hydrosphere – non-living) components of Earth. Such cyclic flow involves the transfer of matter and energy between the different components of the biosphere.
Resources provided by nature on Earth which can be utilized by living organisms to sustain their life are called natural resources. These include air, water, soil, sunlight, minerals, etc. All these resources are found accumulated in different layers of Earth.
There are various types of food resources available to man. Here we discuss how to improve crop yield and animal husbandry to increase food resources available to man.
Disease refers to any condition that disturbs or modifies the normal functioning of the living organisms. Each organ system of our body has specific organs to perform particular functions. In the presence of a disease, functioning or the appearance of one or more systems of the body may change. These changes give rise to symptoms and signs of disease.
Health is the state of proper functioning of body and mind. Any malfunctioning at the level of cells, organs or organ systems can be caused by various agents/factors.
The method of arranging organisms into groups on the basis of their similarities and differences is called classification.
First level of classification among plants depends on whether the plant body possesses well-differentiated distinct cellular components or not. Next level is based on the presence or absence of special vascular tissues for the transport of water and other substances. Further classification takes into account the ability to bear seeds and whether seeds are enclosed within the fruits or not.
Depending on these characteristics, kingdom-Plantae is divided as of Thallophyta, Bryophyta, Pteridophyta, Gymnosperms and Angiosperms.
Animals are the eukaryotic, multicellular and heterotrophic organisms. Their cells do not have cell walls and most of them are mobile. Kingdom-Animalia is thus classified on the basis of the extent and type of body design.
Based on morphology, animal tissues can be grouped into four basic types. Multiple tissue types comprise organs and body structures. While all animals can generally be considered to contain the four tissue types, the manifestation of these tissues can differ depending on the type of organism.
The four basic Animal Tissues are: (i) Epithelial Tissue; (ii) Connective Tissue; (iii) Muscular Tissue; and (iv) Nervous Tissue.
The tissue is a group of cells. The cells in a tissue can be similar or different. The groups of cells thus formed carry specific functions. A group of different tissues makes an organ. There are two types of tissues : (i) Plant Tissue; and (ii) Animal Tissue.
A cell consists of three parts: the cell membrane, the nucleus, and, between the two, the cytoplasm. Within the cytoplasm lie intricate arrangements of fine fibers and hundreds or even thousands of miniscule but distinct structures called organelles. Here we cover them all.
All living organisms are composed of Cells. Cell is the basic fundamental structural and functional unit of living organism.
Try these Class X one mark biology question to check your preparedness…[…]
The reproductive organs in human beings ie. Testis in males and ovary in females become functional only on Puberty…[…]
The different reproductive parts of a flower are – sepals, petals, stamens, and carpels…[…]
Learn more about Natural Resources available to man and find out ways how to manage Natural resources in a sustainable way.
A good source of energy would be one with (i) A large amount of work per unit volume or mass; (ii) easily accessible; (iii) easy to store and transport; and (iv) economical.
An environment is defined as the surroundings or conditions in which a person, animal, or plant lives or operates.
Evolution is the process by which different kinds of living organism are believed to have developed from earlier forms during the history of the earth…[…]
Heredity – The transmission of characters (or traits) from the parents to their off-springs is called heredity…[…]
In case of plants, growth and development are in a coordinated manner…[…]
In animals, control and coordination are provided by nervous and muscular tissues…[…]
Life process has four components: Nutrition, Respiration, Transportation, Excretion.
Life Process has four components – Nutrition, Respiration, Transportation and Excretion. Here we look at life processes in Plants.
From the components to ecosystem, the a comprehensive blog post on ‘Our Environment’. Its a time saver.
The post tells how to manage Natural Resources by explaining the terms used in the topic. You will surely find it helpful.
Here is a chart to help all to understand the basic concept of heredity and evolution. Heredity Evolution Chart Check …
Earlier we had talked about nutrition covered under the chapter: Life Processes. The life process which is vital are nutrition, …
