The most important characteristic of evergreen plants is that they always remain green, no matter what the weather. They do not shed their leaves, but replace them with new leaves every year. Evergreen plants thrive well in cold or dry climates, where plants that lose their leaves in winter may die.

The term "histology" was first used by the French physician Marie François Xavier Bichat, but it was popularized and introduced into English by the Swiss anatomist Karl Wilhelm von Nägeli in the early 19th century.

The HAL Tejas is a lightweight multirole fighter developed by India. It is a tailless, compound delta wing design powered by a single engine. It came from the Light Combat Aircraft (LCA) Programme, which began in the 1980s to replace India’s against MiG-21 fighters. Later the LCA was officially named ‘Tejas’, meaning ‘Radiance’ by then Prime Minister Atal Bihari Vajpayee.

The junction between the axon of one neuron and the dendrite (or cell body) of the next neuron is called a synapse. At the synapse, electrical or chemical signals are transmitted from one neuron to another or to an effector cell, such as a muscle cell or gland cell. Synapses play a crucial role in the transmission of nerve impulses within the nervous system.