Here is an essay on snakes. Snakes are a very specialised group of Reptiles under order Ophidia. Nearly 3,000 species of snakes are now found in the tropical and sub-tropical parts of the world. Out of these about 300 are Poisonous and others are Non-Poisonous. WHO has estimated that thirty to forty thousand people die annually of snake bite. Snakes [...]
Here is an essay on life. 'Life' is abstract. It has, perhaps, no objective reality apart from the living body and, hence, evades definition. Aristotle (304-322 B.C.), the ancient Greek naturalist and father of modern biology (Fig. 2), recognised plants and animals as living objects, but failed to put forward a precise definition of life. Though life has not been [...]
Here is an essay on the plant cell. If a thin slice is taken from any part of a plant and observed under a microscope, it is found to be composed of many chambers or compartments resembling the chambers of a honeycomb. Each of these chambers is called a cell. A plant cell has usually an outer firm non-living boundary [...]