The gymnosperms (/ ˈdʒɪmnəˌspɜːrmz, - noʊ -/ ⓘ nə-spurmz, -⁠noh-; lit. 'revealed seeds') are a group of woody, perennial seed-producing plants, typically lacking the protective outer …

裸子植物 （學名： Gymnospermae）是指 種子植物 中， 胚珠 在一開放的 孢子葉 邊緣或葉面的 植物，孢子葉通常會排列成圓錐的形狀；由於孢子葉並不向內卷合包覆胚珠，所以也無子房的 …

Mar 12, 2025 · gymnosperm, any vascular plant that reproduces by means of an exposed seed, or ovule —unlike angiosperms, or flowering plants, whose seeds are enclosed by mature …

May 2, 2018 · Gymnosperms are flowerless plants that produce cones and seeds. The term gymnosperm literally means "naked seed," as gymnosperm seeds are not encased within an …

Basically, gymnosperms are plants in which the ovules are not enclosed within the ovary wall, unlike the angiosperms. It remains exposed before and after fertilisation and before developing …

Apr 27, 2017 · Gymnosperms are a group of plants which produce seeds that are not contained within an ovary or fruit. The seeds are open to the air and are directly fertilized by pollination.

裸子植物门（Gymnospermae）是植物界下的一门，既是颈卵器植物，又是种子植物，它们有胚珠（不同于蕨类植物门），但心皮不包成子房，且胚珠裸露，胚乳（即雌性原叶体）在受精前已 …

Oct 26, 2024 · A gymnosperm is a type of seed-producing plant whose seeds are not enclosed within an ovary or fruit. The term “gymnosperm” derives from the Greek words gymnos …

Aug 3, 2023 · Definition: Gymnosperms are the plants that are most ancient vascular, flowerless, seed-producing, and can reproduce through an exposed seed or ovule. They produce seeds …

Gymnosperms were the dominant phylum in Mesozoic era. They are adapted to live where fresh water is scarce during part of the year, or in the nitrogen-poor soil of a bog. Therefore, they are …