In botany, a seed is a plant embryo and nutrient reserve enclosed in a seed coat, a protective outer covering called a testa. More generally, the term "seed" means anything that can be sown, which may include seed and husk or tuber. Seeds are the product of the ripened ovule, after the embryo sac is fertilized by sperm from pollen, forming a ...

2021年4月2日 · The seed is the embryonic stage of the plant life cycle. Most seeds consist of three parts: embryo, endosperm, and seed coat. The embryo is a tiny plant that has a root, a stem, and one or more leaves. The endosperm is the nutritive tissue of the seed, often a combination of starch, oil, and protein.

2023年8月31日 · A seed is the small, matured reproductive structure produced by plants, typically containing an embryo or young plant inside. Seeds are a crucial part of a plant’s life cycle as they serve as a means of reproduction and dispersal. They contain all the necessary nutrients and genetic information to develop into a new plant under suitable conditions.

2025年3月13日 · seed, the characteristic reproductive body of both angiosperms (flowering plants) and gymnosperms (e.g., conifers, cycads, and ginkgos). Essentially, a seed consists of a miniature undeveloped plant (the embryo), which, alone or in the company of stored food for its early development after germination, is

2023年2月2日 · A seed is a structure that encloses the embryo of a plant in a protective outer covering. Under favorable conditions of growth, a seed gives rise to a new plant, using the nutrients stored in them. The union of the male and female reproductive cells inside the ripened ovule of a flower helps in the formation of seeds in a plant.

Seeds are often inside fruits. A seed, though not active, is a tiny living thing. It contains the embryo of the future plant, which is not changing or developing: it is dormant. The common idea is that the seed "sleeps" until it gets what it needs to wake up. That is not correct.

2023年8月3日 · A seed is the fertilized matured ovule that possesses an embryonic plant, stored food material, and a protective coat that is viable and can germinate.

2023年10月19日 · Seeds grow into larger plants through the process of germination. Germination requires optimum sunlight, temperature, water and air for the seed to turn into a plant. Isn’t it amazing that a tree as tall as a building can emerge from just a tiny seed?

2024年1月30日 · Seeds have three main parts: an embryo, a seed coat (testa), and the endosperm (cotyledon; Figure 5.4.2 5.4. 2). The function of each of these parts is very specific: Seed coat (testa): The outer layer that surrounds the seed. It protects the embryo against microbes and the environment.

a small, round or oval object produced by a plant and from which, when it is planted, a new plant can grow 种子 Sow the seeds (= put them in the ground ) about three centimetres deep .