Read this article in Hindi to learn about the structure of oscillatoria, explained with the help of a suitable diagram. पहचान एवं वर्गीकरण: ये तन्तुरूपी नीले-हरे शैवाल हैं । ये भी सरल रचना वाले मोनेरा जीव हैं । वर्गीकरण में इनका स्थान निम्नानुसार है: जगत् - मोनेरा-जगत् (प्राकैरियोटिक कोशिकाधारी) डिविजन - सायनोफाइटा (नीले-हरे शैवाल) वंश – ऑसिलेटोरिया (Oscillatoria) टिप्पणी: (i) [...]
The process of evolution of different species starting from a point in an geographical area and finally radiating to other areas of geography is called adaptive radiation. Examples of adaptive radiation are: 1. Darwin's Finches: Darwin observed an amazing diversity of creature in Galapagos Islands. They represented one of the best examples of adaptive radiation. Of all the varieties of [...]
Life on earth appeared 500 million years after its formation. Different theories were given by different thinkers and scientists. (i) Theory of Special Creation: It states that God created life by his divine act off creation, i.e., the earth; light; plants and animals are all being created by the supernatural power. This theory has following connotations: (a) All living organisms [...]