3.Apomixes is comparable to the conditions of apogamy and apospory, which are seen in many ferns.
在许多物中常见的无融生殖包括无配子生殖和无孢子生殖。
4.The ultrastructure of the blepharoplast and the multilayered structure (MLS) in the fern Osmunda cinnamomea var.
精子发育过程中的生毛体和多层结构的超微结构进行了研究。
5.Ferns were the first terricolous vascular plants, and still comprise an important part of primary productivity of ecosystems.
物是最早登陆的维管物,今仍然是生态系统初级生产力的重要组成部分。
6.Rhizoid A unicellular rootlike structure found in certain algae and in the gametophyte generation of the bryophytes and some ferns.
在一些藻、苔藓物和裸子物配子体中存在的由单个细胞形成的似根的结构。
7.The Kizilsu palynofloras are characterized by the dominance of coniferae, abundance of schizaeaceous ferns and presence of primitive angiospermous pollen.
克孜勒苏群孢粉组杉目的优势、真目海金沙科的显赫和原始被子物的出现为特征。
8.Indusium The flap of tissue, derived from the placenta, that encloses the developing sporangia in the sorus of a fern.
是一种起源于胎座(应为叶表皮译者注)的瓣片状组织,覆盖在物孢子囊群中正在发育的孢子囊上。
9.Here in the rainforest, the giant ohia lehua trees and hapuu ferns provide protective canopy to an amazingly diverse collection of plants and animals.
10.Homosporous ferns produce sporophytes by intra gametophytic selfing, inter gametophytic mating, or apogamy.Gametangium ontogeny, genetic load, and ploidy affect the mating system of each species.
11.Characteristics: Terrestrial ferns; stipes tuft, backlish at base; young fronds pinnaye with wider pinnae, when getting older, the fronds become bipinnate or tripinnatifid with slender pinnules.