In this article we will discuss about the process of development of leaf, explained with the help of diagrams. In the shoot system of plants the leaf is the principal lateral appendage of stem. A leaf has determinate growth. The foliage leaves are of two types — microphyllous- and macrophyllous leaf and the leaves are also called microphyll and megaphyll [...]
In this article we will discuss about the Development of Genetics as a Branch of Biology:- 1. Subject-Matter of Genetics 2. History and Development of Genetical Science. Subject-Matter of Genetics: All living things have a tendency to produce young ones. The offsprings of all the organisms (plants and animals) resemble their parents in several respects. Why is it so? [...]
Arid zones are not uniform. There are at least four primary groups: 1. Hot, dry global zones bounding both sides of the tropics, as in North Africa and the middle East. 2. Cold, continental dry zones, as in central Asia and central Australia. 3 Cold, upland dry zones, blocked by high mountains, such as in central Anatolia. 4. Cold and [...]