This is a special method of vegetative reproduction. The gemmae develop in the gemmae cup and each gemma is a small, more or less circular flattened structure with a conspicuous depression on each side. The growing point lies in the depression.

It is a quick method of multiplication Since the rate of multiplication is high there is overcrowding.

Asexual reproduction

Asexual reproduction is a mode of reproduction in which offspring are produced without the involvement of gametes. This means that a single parent can give rise to genetically identical offspring. Asexual reproduction methods include budding, fragmentation, and spore formation. While asexual reproduction does not directly induce overcrowding in plants, it can indirectly contribute to overpopulation under certain conditions.

Vegetative propagation

Vegetative propagation is a specific form of asexual reproduction in plants that involves the production of new individuals from vegetative parts such as stems, roots, or leaves. This method is commonly used in horticulture to propagate desired plants with specific traits. However, vegetative propagation can lead to overcrowding if the offspring are not properly spaced out or managed. For example, if plants are propagated by stem cuttings and allowed to grow in close proximity without adequate spacing, they can become overcrowded over time.

Tissue culture

Tissue culture is a laboratory technique used to grow new plants from small sections of plant tissue under sterile conditions. This method allows for the rapid production of large numbers of identical plants. While tissue culture itself does not directly induce overcrowding, it can contribute to overpopulation if the resulting plants are not properly managed and distributed.

Sexual reproduction

Sexual reproduction involves the fusion of male and female gametes, resulting in the formation of genetically diverse offspring. This method does not directly induce overcrowding in plants as it requires the involvement of two parents. However, sexual reproduction can indirectly contribute to overpopulation if the offspring are not properly dispersed from the parent plants.

Conclusion

Among the given options, vegetative propagation is the method of reproduction that can induce overcrowding in plants. This is because vegetative propagation allows for the production of new plants from vegetative parts, which can lead to overcrowding if the offspring are not properly managed or spaced out. It is important to consider proper spacing, management, and distribution when utilizing vegetative propagation techniques to prevent overcrowding in plant populations.