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Summary - In lower organisms, there is no transport system as the cells are in touch with the surrounding medium. The transport is by the physical processes like diffusion, osmosis, etc. With the advancement in structure, the organisms have to evolve methods to transport nutrients and was..

While the nervous system and endocrine system have their own features, they have a common method of communication. Both the systems release chemicals to communicate between cells. Together these two systems carry out a very complex process of maintaining a homeostatic (balanced) internal envi..

The abiotic environment includes the air (atmosphere), water (hydrosphere) and land (lithosphere). The biotic environment includes the plants, animals and the microbe..

All these evidences point to the fact that evolution occurs. The exact mechanism of evolution, however, is not yet conclusively proven. But constant study and research in the above fields is continuing for answers. Asexual reproduction results in identical offspring whereas sexual reproduction..

Nutrition can be defined as the process by which an organism obtains food that is used to provide energy and materials for its life sustaining activities. There are basically two modes of nutrition: ..

Reproduction is defined as the production of individuals of the same species, that is the next generation of the species. There are basically two types of reproduction - asexual and sexual. Asexual reproduction involves only one parent and the offspring is genetically similar to the parent...

Respiration is defined as the catabolic biochemical process during which organic compounds break down in order to release energy. The organic compounds that are broken down are called the substrates. Glucose is the most common substrate. The general equation for respiration is Breathi..

In lower organisms, there is no transport system as the cells are in touch with the surrounding medium. The transport is by the physical processes like diffusion, osmosis, etc. With the advancement in structure, the organisms have to evolve methods to transport nutrients and wastes. The actual..

Angiosperms represent the most recent and the most advanced group of plants. Angiosperms have been of immense importance to humans, more than any other group. There have been several attempts to classify angiosperms. One of the earliest attempts was that of Carolus Linnaeus. He was the f..

Angiosperms represent the most advanced group of plants. The angiosperm plant body consists of an underground root system and an aerial shoot system. The shoot system contains vegetative parts and reproductive parts. The root serves two primary functions anchoring and absorption. There a..