nucellus 的定义
plural nu·cel·li [noo-sel-ahy, nyoo-]. /nuˈsɛl aɪ, nyu-/. Botany.
- the central cellular mass of the body of the ovule, containing the embryo sac.
更多nucellus例句
- The vessels of the cord are prolonged to the base of the nucellus n by means of the raphe r.
- The base of the nucellus is indicated by the chalaza ch, while the apex is at the micropyle m.
- The hilum or base of the seed, and the chalaza or base of the nucellus are united by means of the raphe r.
- The connexion between the base of the ovule and the base of the nucellus is kept up by means of the raphe r.
- The point where the integuments are united to the base of the nucellus is called the chalaza (figs. 111, 112).