What term refers to the part of a plant capable of growing into a new plant?

The term that refers to the part of a plant capable of growing into a new plant is "propagule." A propagule is any part of a plant, such as a seed, bulb, or vegetative structure, that can develop into a new individual plant. This encompasses various means through which plants can reproduce and disperse, including seeds, spores, cuttings, and other structures.

Understanding the concept of propagules is essential in plant biology and horticulture, as it highlights the various ways plants can reproduce and ensure their survival and spread. This term is particularly important in the context of both natural ecosystems and agricultural practices, where propagation techniques can influence crop production and plant management strategies.

Seeds, bulbs, and shoots are specific types of propagules. While seeds are the most common form of propagule and bulbs represent a storage organ that can develop into a new plant, the broader term "propagule" encompasses all reproductive forms, making it the most accurate answer in the context of the question.