Nectar and Pollen are two different substances that are produced by plants. The basic difference between them is that nectar is a fluid produced by the flower, where as pollen is the sperm cells of the plant.

Thermometers are devices used for the measurement of temperature. They are mainly of two types – electrical and non-electrical. Thermometers based on mechanisms like mercury in glass or vapor pressure fall in...

Clouds are generally classified into three types – High, Low and Middle types, depending upon their region of formation. They are further classified according to their shape and size.

Animal kingdom consists of many different types of animals, but still all the animal share common characteristics. They all are multicellular means made up of more than one cell. They do not contain any cell...

Meroplankton and Holoplankton are two different groups of Zooplankton. Meroplankton refer to those organisms which only spend a portion of their life cycle within the plankton form. On the other hand,...