What is ecology?
Ecology is a branch of biology and consider as multi-disciplinary holistic science. It relates with the scientific study of relationship of living organisms with each other and with their environment. It is also called environmental biology. The ecology is basically study of distribution and abundance of organsims and internal interaction.
What is cell wall?
Cell wall provides a fixed form to a cell. It is non-living, outermost boundary of plant cells, bacterial cell and fungal cells. It is not in animal cell. It is made up of cellulose and pectin. The wall possesses rigidity and serves as saver to plasma membrane and inner side from mechanical injuries and pathogens.
What is nucleus?
A combination of chromosomes in its structures. The nucleus performs controlling function of the cell for all the activities. Nucleus may be spherical and irregular shape. Nucleus is filled with a gel like fluid called nucleoplasm.
What are centrosomes?
A rounded structure, the centrosomes is near the nucleus in animal cell. Each centrosome has 2 centrioles. These perform function of division of cell.
What is the mean by unicellular organism?
Unicellure organism is made up of one cell structure, this organism is called unicellular organism. For example: (amoeba which is found ponds and ditches). These can be found everywhere.
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