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Living Beings are Organised
Living Beings are Organised - Organisation refers to a kind of structure or system or situation where the smaller components become arranged into larger ones in a hierarchical order of complexity, to co-ordinate with one another in performing common functions or achieving common..
Organismic Level
fig. 1.1 Levels of Organisation..
Organ Level
Different types of tissue may together become organised into an organ for some specific function. E.g., a gland is an organ meant for secretion. In a gland there are four tissues - Epithelium (for secretion) Muscular tissue (for contraction of the gland) Connective tissue (for bi..
Cooperative Interactions - Society Formation, Communication and Cannibalism
It is a highly organised, integrated and complex society, which involves the division of labour at the individual level. This high level degree of division of labour is due to well-developed instinctive behaviou..
Introduction
. From an acellular level of organisation to cellular level and then tissue level, organ level and organ system level of organization can be recognised. In addition, one can recognise the gradual appearance of distinct features such as sym..
Biosphere
All the ecosystems of the world together form the biosphere. It consists of all the living organisms and all the regions of the earth and its atmosphere where they live. A Biome is a large unit characterised by flora and fauna found in a specific climatic zone. For e.g., a desert or a tropical rai..
All the ecosystems of the world together form the biosphere. It consists of all the living organisms and all the regions of the earth and its atmosphere where they live. A Biome is a large unit characterised by flora and fauna found in a specific climatic zone. For e.g., a desert or a tropical rai..Ecosystem - Structure and Function
The characteristic structure of an ecosystem is obtained by the systematic physical organisation of the abiotic and biotic components of that particular ecosystem. The two main structural features of any ecosystem are its 'species composition' and 'stratification'. An ecosystem can be rep..
Summary
Both living organisms and non-living matter are composed of some basic elements and are bound by the same physical laws. However, living organisms differ from non-living matter in some specific aspects. Living organisms exhibit a kind of organisation from molecular level to..
Flow of Energy
Every organism has a tendency to increase its entropy, which is very much in accordance with the second law of thermodynamics. In order to maintain its organisation at the molecular, cellular and organismic levels, every organism is forced to obtain energy from its surroundings..
Consequences of Over Population/Impact of Population Growth
India is the best country to study the consequences of over population. Geometric growth in population has pushed our country into population explosion leading to number of serious consequences. Some of them are: Decreased availability of food and clothing. Decreased per capita food availability de..
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