Define growth , differentiation , development dedifferentiation,redifferentiation , determinate growth, meristm and growth rate
1. Growth: Growth refers to an increase in size, mass, or number of cells in an organism. It is a fundamental characteristic of living organisms that allows them to develop and adapt to their environment.
2. Differentiation: Differentiation is the process by which cells become specialized or differentiated into specific cell types with specific functions. During development, cells undergo differentiation to form different tissues and organs in an organism.
3. Development: Development refers to the series of changes that take place during the life cycle of an organism, starting from fertilization and continuing until death. It involves growth, differentiation, and maturation of cells, tissues, and organs.
4. Dedifferentiation: Dedifferentiation is the process in which specialized cells lose their specialized characteristics and revert back to a more undifferentiated or primordial state. It is often observed in plants, where specialized cells can dedifferentiate and regenerate into new organs or tissues under certain conditions.
5. Redifferentiation: Redifferentiation is the process in which dedifferentiated or undifferentiated cells regain their specialized characteristics and differentiate into specific cell types again. This process typically occurs during tissue regeneration or healing after injury.
6. Determinate Growth: Determinate growth is a type of growth in which an organism or a specific organ reaches a certain size or stage and stops growing further. Once the determinate growth is completed, the organism or organ does not grow anymore.
7. Meristem: Meristem refers to the specialized tissues found in plants that can continuously divide and produce new cells, which further differentiate into various plant tissues and organs. It is responsible for plant growth and development.
8. Growth Rate: Growth rate is a measure of how fast an organism or a specific organ increases in size or mass over a specific period of time. It is often expressed as a percentage or a rate of change per unit of time. The growth rate can vary depending on various factors such as the organism's genetics, environmental conditions, and nutrient availability.