Perales, Malia (2012) Aspects of cell in biology. Research World, Delhi, India. ISBN 9788132331292
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Abstract
Multicellular organisms are organisms that consist of more than one cell, in contrast to single-celled organisms. Most life that can be seen with the naked eye is multicellular, as are all animals (except for specialized organisms such as Myxozoa) and land plants. Multicellular organisms are organisms that consist of more than one cell, in contrast to single-celled organisms. Most life that can be seen with the naked eye is multicellular, as are all animals (except for specialized organisms such as Myxozoa) and land plants. Early life was most probably single celled. Multicellularity has evolved independently dozens of times in the history of Earth, for example in plants and animals. Multicellularity exists in both prokaryotes and eukaryotes, and first appeared several billion years ago in cyanobacteria. In order to reproduce, true multicellular organisms must solve the problem of regenerating a whole organism from germ cells (i.e. sperm and egg cells), an issue that is studied in developmental biology. Therefore, the development of sexual reproduction in unicellular organisms during the Mesoproterozoic is thought to have precipitated the development and rise of multicellular life. Multicellular organisms, especially long-living animals, also face the challenge of cancer, which occurs when cells fail to regulate their growth within the normal program of development. Changes in tissue morphology can be observed during this process.
| Item Type: | Book |
|---|---|
| Subjects: | Q Science > QH Natural history > QH301 Biology |
| Divisions: | Electronic Books |
| Depositing User: | Esam @ Hisham Muhammad |
| Date Deposited: | 02 Jan 2023 02:32 |
| Last Modified: | 02 Jan 2023 02:32 |
| URI: | http://odlsystem2.utm.my/id/eprint/3922 |
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