life cycles of organisms

Cell - A Unit of Life - Organisms may be broadly classified into two kinds: Unicellular Multicellul..

All living organisms, whether plants or animals, are made up of microscopic units called cells. The cell occupies the same central position in biology as the atom in the physical science..

All living organisms, whether plants or animals, are made up of microscopic units called cells. The cell occupies the same central position in biology as the atom in the physical science..

Biology is a branch of science, which deals with the study of life. It is concerned with the study of living organisms, which are immeasurably diverse and complex than the non-living matter. Hence, biology is also described as life science or natural scienc..

Conservation of wild life has three objectives a) To maintain essential ecological processes and life supporting systems. b) To preserve the diversity of species or the range of genetic material found in the world's organisms. c) To ensure sustainable utilisation of s..

Forests and Wild Life - The biotic component of our environment on land, i.e. plants and animals (leaving aside the oceans and other water bodies) are overwhelmingly found in forests. Forests form a buffer for the earth to protect life forms; in fact that's where all our biodive..

Biology - The study of Life - Biology is a branch of science, which deals with the study of life. It is concerned with the study of living organisms, which are immeasurably diverse and complex than the non-living matter. Hence, biology is also described as life..

Living organisms have a definite organisation consisting of structural and functional units called cells that make the physical basis of life namely protoplasm. Living organisms obtain simple molecules from their surrounding environment, convert them into complex ..

In unicellular organisms the cell leads a totally independent life. It does not depend on any other cell for any of its activity, except in cases of sexual reproduction. There is division of labour only at the organelle level since different organelles perform specific functions..

The appearance of new needs forces the organism to put in additional efforts to fulfil the need. It may become necessary for the organism to put a particular part of its body into more and more frequent use or less and less frequent use. This idea came to be known as use and di..