Question

Distinguish between the following in tabulated form li) Colonial organization and multicellular organization (ii) Agriculture and horticulture​

Answer 1

Difference Between Unicellular And Multicellular Organisms

The difference between unicellular and multicellular organisms is majorly due to the difference in the composition, function, and arrangement of the cells. The unicellular organisms contain a single cell whereas the multicellular organisms contain multiple cells.

Unicellular organisms conciliate all the cellular activities by a single cell, while multicellular organisms carry out specific cell activities through a well-defined group of cells. The arrangement of cells is much simpler in unicellular organisms, whereas multicellular organisms found it complex to arrange cells.

Difference Between Unicellular And Multicellular Organisms

Features of Unicellular Organisms

The main feature of a unicellular organism is that they are microscopic. It cannot be easily observed through the naked eye. Most of the organisms commonly reproduce via asexual methods like fragmentation, budding, and binary fission, whereas few of them can also reproduce sexually via conjugation. Due to single-cell composition, the arrangement of the cell is quite simple. These organisms can develop well in extreme heat, acidity, salinity, etc.

Multicellular Organisms

Multicellular organisms can be defined as living-organisms, which consist of multiple cells. With these distinct cell organelles it is capable to perform different life processes or separate cellular activities inside a body. It only consists of eukaryotic organisms like insects, animals, birds, humans, etc.

Features of Multicellular Organisms

The main feature of a multicellular organism is that these are macroscopic. It is easily noticeable through the open eye. Most of the organisms commonly reproduce via sexual methods (by the formation of zygote), whereas few members few of them can also reproduce asexual means like budding, spore formation, etc. Due to the multiple cell composition, the arrangement of cells is quite complex. The size of these organisms increases as the numbers of cells increases.

Similarities Between Unicellular And Multicellular Organisms

Both single and multi-celled organisms embrace a functional unit of life, known as “Cells”.

Both of them consist of plasma membrane and cytoplasm.

They carry similar features by containing DNA and ribosomes for the gene expression.

The process of cell division typically occurs commonly through mitosis or meiosis.

They need cellular energy to function.

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