Tissues are made from cells. Elimination of worn-out bits and pieces is preceded by the 'introduction' of new cells.
New cells are produced by the process called cell division, and this happens by the process known as mitosis.
Mitosis
reduction division
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1. For normal growth, development and maintenance. Example: A lizard with no tail will gain back its tail within some time due to mitosis. Mitosis will produce new cells which will help the lizard to get back its tail. If our skin is scraped, mitosis will produce new cells to replace back the worn out cells. If we donate a part of our liver, we will gain back that part of liver too because of mitosis. Overall, mitosis is required for the normal growth, development and maintenance.
1. For normal growth, development and maintenance. Example: A lizard with no tail will gain back its tail within some time due to mitosis. Mitosis will produce new cells which will help the lizard to get back its tail. If our skin is scraped, mitosis will produce new cells to replace back the worn out cells. If we donate a part of our liver, we will gain back that part of liver too because of mitosis. Overall, mitosis is required for the normal growth, development and maintenance.
Mitosis
Mitosis allows growth and replaces worn out or damaged cells.
Cell division allows for growth, as cells divide to produce new cells. Worn out or damaged cells are typically removed through programmed cell death, also known as apoptosis, which helps maintain the health and proper functioning of tissues and organs.
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They will do that when there are worn out. Time for replacement.
The formation of new cells is necessary for the following reasons: * multicellular plants and animals start life as single cells, the zygotes or fertilized egg cells; the process of Mitosis gives rise to many cells which differentiate to form tissues, organs and organ-systems of the organism. * mitosis results in an increase in size and growth of an organism, * cell reproduction is used to form new cells to renew certain tissues and to replace worn out cells * mitosis is also used as a form of asexual reproduction in some organisms like in unicellular Amoeba and multicellular Hydra as well as vegetative reproduction in plants.
Mitosis is necessary for all living things because it is the process by which cells divide and replicate to produce new cells for growth, repair, and asexual reproduction. Without mitosis, organisms would not be able to grow, develop, or replace damaged or worn-out cells. It is essential for maintaining the integrity and function of tissues and organs in multicellular organisms.
reduction division
Cells undergo mitosis because there must be a process in which the nucleus is divided in order for there to be a successful reproduction for cells. No mitosis, no cell reproduction.
Nutrition is the process of taking in food by a living being for growth of the body, repair of worn out tissues and to obtain energy. Nutrition is important because :- It repairs worn out tissues It helps us to obtain energy It grows the
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The water pump is worn out. Time for replacement.