Male gametes or sperms are motile. The tail helps the sperm to swim through the reproductive tract of the female to reach the oviduct. The male... View Article
Coal is one of the fuels used to cook food. Coal is not so often found as a cooking fuel on its own, it is rather utilized in regions where... View Article
True Seeds have a seed coat which protects them while they grow and develop, usually underground. Inside the seed there are is an embryo (the... View Article
Least polluting fuel for vehicles is Compressed Natural Gas(CNG). CNG is an odourless, colourless and tasteless compound with non-corrosive and... View Article
Technically, the soil is a mixture that contains minerals, organic matter, and living organisms. But broadly speaking, soil can refer to any... View Article
Filarial worm (Wuchereria bancrofti) Worms causing the disease elephantiasis is the Filarial worm (Wuchereria bancrofti). Elephantiasis is a... View Article
Cuboidal epithelium. The cuboidal epithelium is composed of epithelial cells that are distinctively cuboidal in shape. The cell comprising the... View Article
Cracker on ignition produces sound due to the sudden formation of a large amount of gas due to chemical reactions, such a reaction is called... View Article
When fossil fuels are burned, they release nitrogen oxides into the atmosphere, which contribute to the formation of smog and acid rain. The most... View Article
Nucleus Paramoecium is a genus of unicellular ciliated protozoa. They are characterised by the presence of thousands of cilia covering their... View Article
Columnar epithelium The columnar epithelium is composed of epithelial cells that are column-shaped. The cell comprising the columnar epithelium... View Article
Ductless Endocrine glands are also known as the ductless glands because of the fact that their secretions are released directly into the blood,... View Article
Microscopes Most cells are so small that they cannot be viewed with the naked eye. Therefore, scientists must use microscopes to study cells.... View Article
Coal tar is a black, thick liquid with an unpleasant smell. It is obtained as a by-product in the process of making coke. Though its colour is... View Article
Some important weeding methods are listed below Weeds can be controlled using weedicides: It is a chemical, which is sprayed in the fields to... View Article
Oxygen is a supporter of combustion Carbon dioxide being heavier than oxygen forms a blanket around the fire. Thus, cutting off the supply of... View Article
Plants produce two gaseous waste products i.e. oxygen during photosynthesis and carbon dioxide during respiration. Excretion of gaseous waste in... View Article
The process of transpiration keeps the cell turgid, cools the surface of the leaves, and helps in the movement of minerals from the soil to... View Article
