Modules
K-12
Venation
OverviewFine lines present on the surface of a leaf are leaf veins. The pattern of arrangement of veins on the leaf is called venation. It can be of two types, namely,...
K-12
Types of Chromosomes
OverviewChromosomes are formed by the condensation of chromatin. They are mainly of four types, namely, metacentric, submetacentric, acrocentric and telocentric. Learning...
K-12
The Substances
OverviewPure substances are made of only one type of atom or only one type of molecule. For example, pure iron would only contain iron atoms, pure water would only...
OverviewA heat engine is a device that converts some thermal energy into mechanical energy. Some examples of heat engines are: a thermal power station, a steam locomotive,...
K-12
Digestive System
OverviewThe digestive system is one of the major organ systems of the human body. The main parts of the digestive system are the mouth, oesophagus, stomach, small...
K-12
Anatomy of Neuron
OverviewA neuron is the basic component of the brain and the spinal cord of the central nervous system. The main parts of a neuron are nucleus, dendrite, axon, cell...
K-12
Teeth
OverviewA tooth has three parts. The outermost visible part is called the crown. The region which is hidden in gums is called the root. The region between the crown...
Overview An object can float or sink depending on its density as compared to the density of the fluid in which it is placed. An object floats if its density is less...
OverviewThe human skeletal system is categorized into two types: the axial skeletal system and the appendicular skeletal system. The appendicular skeletal system...
K-12
Simple Microscope
OverviewA microscope is a device used to magnify small, close objects. It uses two convex lenses – an objective lens and eyepiece, with relatively short focal...
K-12
Budding
OverviewBudding is a type of asexual mode of reproduction in which a new organism develops as a bud on the body of an existing organism (parent). The new organism...
K-12
Section of a Leaf
OverviewA leaf is comprised of the upper epidermis, palisade mesophyll cells, spongy mesophyll cells, and the lower epidermis. The lower epidermis contains many...
K-12
Parts of a Plant
OverviewA plant comprises roots, a stem, leaves, flowers and fruit. The region on a plant from which a new bud or branch originates is termed as a node and the distance...
K-12
Refracting Telescope
OverviewA refracting telescope is an optical device that is used to collect and observe light coming from distant objects by using two converging lenses.Learning...
K-12
Chloroplast
OverviewChloroplasts are specialized organelles found in green plant cells and algal cells. Chloroplasts contain chlorophyll and act as sites of photosynthesis.Learning...
K-12
Structure of Leaf
OverviewA leaf is the structure responsible for photosynthesis in plants. The main parts of a leaf are the blade, petiole, midrib, vein and small netted vein. Learning...
Overview The position of an object depends upon the reference point. The actual path traveled between two points is known as distance, whereas the shortest distance...
K-12
Human Brain
OverviewThe human brain is one of the most complex organs of the human body. The brain has four major regions: the cerebrum, diencephalon, brainstem, and cerebellum,...
K-12
Unbalanced Forces
OverviewIf multiple forces acting on an object are such that they combine to form a non-zero net force, then the forces are said to be unbalanced forces. If an unbalanced...
K-12
Monohybrid Cross
OverviewA monohybrid cross is a breeding experiment between parental generation organisms, that differ by a single given trait.Learning ObjectivesAfter completing...