Function of the pollen coat in different stages of the fertilization process. Acta bot. neerl. 27, 205-212.Gillissen LJW, Brantjes NBM (1978) Function of the pollen coat in different stages of the fertilization process. Acta Bot Neerl 27:205–212...
(b)Explain the function of the pollen tube in fertilisation in flowering plants.(3) 相关知识点: 试题来源: 解析 1. idea of {forms a pathway/ grows down } through thestyle / eq ;2. grows towards { ovary / ovule / micropyle / egg cell /ea} ;3. reference to digestive enzymes;4. ...
hilus of the spleen 【医】 脾门 相似单词 spleen n. 1.坏脾气,怒气,怨气 2.脾脏 stomach n. 1.[C]胃 2.[U]肚子 3.[U]忍受能力 v.[T] 1.忍受 2.食用,吃(食物) function n.[C] 1.官能,机能 2.功能,作用;用途;目的 3.职责;职务;职业 4.重大聚会,宴会;宗教仪式 5.【数】函数 6....
In the process of plant reproduction, the function of the anther is to _. A. receive pollen B. produce pollen C. protect the ovary D. develop into a fruit 相关知识点: 试题来源: 解析 B。解析:在植物繁殖中,花药(anther)的功能是产生花粉。柱头(stigma)是接收花粉的结构,而不是花药,A错误。
The uniquely rich fossil record of pollen wall structures has been of great benefit. Literallyh undreds of years of scientific effort have focused on integrating the diversity of pollen form with angiosperm taxonomy. Linking these morphological differences to functional roles is more challenging, ...
These intracellular lipids are synthesised in the vegetative cell of the pollen grain under the control of the gametophytic genome. Over the past few years there has been significant progress in elucidating the composition, biogenesis and function of these important pollen structures. The purpose of ...
摘要: A discussion of composite pollen grains, which occur in all species of A correlation between polyad grain number and max. pod seed number is thought to indicate that the polyad of is a mechanism helping to ensure seed set following a single pollination event....
Significance of pollen and spores distribution to the barrier function of the Longitudinal Range-Gorge Region,Southwest China Erfu Dai,Yujie Liu,Yue Dou.Significance of pollen and spores distribution to the barrier function of the Longitudinal Range-Gorge Region, Southwest China[J... T Pan,WU Shao...
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1984 . Ant inhibition of pollen function: a possible reason why ant pollination is rare . American Journal of Botany 71 : 421 – 426 .Beattie, A. J., Turnbull, C., Knox, R. B., and Williams, E. G. 1984. Ant inhibition of pollen function: a possible reason why ant pollination is...