A new plant grows from a cutting of the parent plant.

When a new plant grows from a cutting of the parent plant, it means that a piece of the parent plant is taken and used to propagate a new plant. This process is known as vegetative propagation or asexual reproduction.

To grow a new plant from a cutting, a healthy stem or leaf from the parent plant is selected. The cutting is usually made at a node, which is the point on the stem where leaves or branches emerge.

The cutting is then set aside to dry for a short period, allowing the wound to callus and prevent excessive water loss. After drying, the cutting is planted in a suitable growing medium, such as soil or water, and provided with appropriate conditions for growth.

With time, the cutting will develop new roots, allowing it to take up water and nutrients from the environment. Once the roots are established, the cutting will start to grow new shoots and leaves, eventually becoming an independent plant.

By using cuttings to grow new plants, gardeners and horticulturists can replicate the desirable traits of the parent plant, such as flower color or fruit size, without relying on seed germination. This method also allows for the production of identical plants, ensuring the preservation of specific genetic characteristics.

Parent cell splits into two identical cells

When a parent cell splits into two identical cells, it is known as cell division, specifically the process of mitosis. Mitosis is a fundamental process in which the genetic material of a cell is replicated and divided equally between two daughter cells.

The process of cell division consists of several stages, including prophase, metaphase, anaphase, and telophase. During prophase, the chromosomes condense, and the nuclear membrane begins to break down. In metaphase, the chromosomes align in the center of the cell. Anaphase follows, in which the replicated chromosomes separate and are pulled towards opposite ends of the cell. Finally, in telophase, the nuclear membrane reforms, and the chromosomes decondense. The cell then physically splits into two daughter cells in a process called cytokinesis.

Throughout mitosis, each chromosome is duplicated so that both daughter cells receive an identical set of chromosomes. This ensures that the genetic information is faithfully passed on to the new cells. The two daughter cells will be genetically identical to each other and the parent cell.

Cell division through mitosis is crucial for growth, development, and tissue repair in multicellular organisms. It allows for the production of new cells that have the same genetic information as the parent cell, contributing to the maintenance and continuity of the organism's cellular structure and function.

Body breaks into two or more pieces, which later develop into complete organisms.

The process you are describing is called fragmentation. It is a form of asexual reproduction in which an organism breaks into two or more pieces, and each piece regenerates and develops into a new, complete organism.

When fragmentation occurs, the pieces that are separated from the original organism are capable of regenerating missing body parts and forming all the necessary tissues and organs to become fully functional organisms. This regenerative ability varies among different organisms, with some having higher regenerative capabilities than others.

Typically, in organisms that undergo fragmentation, the separated pieces can regenerate through the growth and differentiation of specialized cells called stem cells. These stem cells have the ability to divide and differentiate into various cell types required for forming different body structures.

Examples of organisms that can reproduce through fragmentation include some types of worms, sea stars, planarians, and fungi. In these organisms, when a part of the body is separated from the parent organism, it can develop into a new individual by undergoing cell division, tissue regeneration, and organ formation.

Fragmentation as a reproductive strategy allows for rapid reproduction and colonization in some organisms. It can be advantageous in environments where resources are abundant or when dispersal to new areas is necessary. Additionally, fragmentation can aid in the regeneration and repair of damaged or lost body parts in some species.

New individuals split off from existing ones.

The process you are referring to is called budding. Budding is a form of asexual reproduction in which a new individual develops as an outgrowth or bud on an existing organism and eventually becomes separate and independent.

During budding, a small bud or outgrowth forms on the parent organism. This bud contains specialized cells that have the potential to develop into different tissues and organ systems. As the bud grows, it begins to form structures such as organs, limbs, or roots, depending on the organism. Eventually, the bud detaches from the parent organism, becoming a new individual.

Budding is commonly observed in organisms such as yeast, hydra, corals, and some types of plants. In yeast, for example, a small bud forms on the parent cell, and it gradually grows in size until it reaches maturity and develops into a new yeast cell.

One advantage of budding is that it allows for rapid reproduction and population growth under favorable conditions. It also enables the offspring to inherit genetic material directly from the parent organism, resulting in genetic similarity and the preservation of desirable traits.

Budding can occur both internally (endogenous budding) or externally (exogenous budding), depending on the location of the bud's formation and detachment. Regardless of the mode, budding is a mechanism by which new individuals split off from existing ones, leading to the establishment of new populations.