段中涉及无性繁衍的叙述有两处,一是the prodigious spread of these winsome weeds,二是“Asexual organisms can often churn out multiple generations of clones,gaining a distinct edge in the evolutionary numbers game.”。从prodigious spread(疯狂的传播)、chum out multiple generations(大量制造子子孙孙)和...
nidulans in vivoSexuelle Sporen von A. nidulans in vivoSummary: Both the sexual and asexual fruiting bodies of Aspergillus nidulans were discovered in the lung tissue of a captive rhinoceros, in a biopsy specimen from a human with bronchial stump aspergillosis, and in the guttural pouch of a ...
试题来源: 解析 B。本题考查植物无性繁殖的方式。A 选项“Pollination(授粉)”和 C 选项“Fertilization(受精)”以及 D 选项“Seed dispersal(种子传播)”都涉及两性生殖细胞的结合,属于有性生殖。B 选项“Budding(出芽)”是植物无性繁殖的一种方式。
C。解析:Grafting is a method of asexual reproduction in plants. It involves joining parts of two different plants together so that they grow as one. Fertilization is part of sexual reproduction. Seed dispersal is related to the spread of seeds after sexual reproduction. Cross - pollination is ...
A. It can produce a great variety of offspring B. It can adapt to changing environments quickly C. It is a faster way to produce new plants D. It requires a lot of E. nergy 相关知识点: 试题来源: 解析 C。解析:植物无性繁殖的一个优势是能够更快速地产生新的植株。因为无性繁殖不需要经...
In asexual reproduction of plants, which part can be used for reproduction? A. Only the root B. Only the flower C. Leaves, stems or roots D. Only the seed 相关知识点: 试题来源: 解析 C。解析:在植物的无性繁殖中,叶子、茎或者根都可以被用于繁殖。例如,有些植物可以通过扦插茎来繁殖,有些...
A. Fragmentation B. Self - pollination C. Bulb division D. Stem layering 相关知识点: 试题来源: 解析 B。解析:自花授粉是有性繁殖方式,不是无性繁殖方式。选项A,分裂繁殖是无性繁殖方式,A错误。选项B正确。选项C,球茎分裂是无性繁殖方式,C错误。选项D,茎压条是无性繁殖方式,D错误。
A. High genetic variation among offspring B. The need for two different plants to start the process C. Offspring are genetically identical to the parent D. Involvement of pollination 相关知识点: 试题来源: 解析 C。解析:植物无性繁殖的一个特征是后代与亲本在基因上相同。选项A,无性繁殖后代基因变...
Which of the following is a method of asexual reproduction in plants? A. Pollination B. Fertilization C. Budding D. Seed dispersal 相关知识点: 试题来源: 解析 C。解析:Budding(出芽生殖)是植物无性繁殖的一种方式,Pollination(授粉)和Fertilization(受精)是有性繁殖过程中的环节,Seed dispersal(种子传播...
The peak of asexual reproduction in both the Indian and Pacific Ocean was observed in winter (June-July). Thus, asexual reproduction in this species occurs outside the season for sexual reproduction. The rate of asexual reproduction appears to vary between sample locations. However, results of ...