spore - a small usually single-celled asexual reproductive body produced by many nonflowering plants and fungi and some bacteria and protozoans and that are capable of developing into a new individual without sexual fusion; "a sexual spore is formed after the fusion of gametes" pollinium - a ...
Pollen, a powdery substance, which is produced by flowering plants and contains male reproductive cells, is usually carried from plant to plant by insects or birds, but some plants rely on the wind to carry their pollen.Wind pollination is often seen as being primitive and wasteful in costly ...
Paragraph 3 is marked with an arrow 正确答案:B 显示答案 进入答题 问题反馈收藏题目 译文 Wind Pollination [#paragraph1]Pollen, a powdery substance, which is produced by flowering plants and contains male reproductive cells, is usually carried from plant to plant by insects or birds, but some ...
Paragraph 1 is marked with an arrow 正确答案:C 显示答案 进入答题 问题反馈收藏题目 译文 Wind Pollination [#paragraph1]Pollen, a powdery substance, which is produced by flowering plants and contains male reproductive cells, is usually carried from plant to plant by insects or birds, but some ...
2、The little girl is allergic to all kinds of pollen.这个小女孩对一切花粉都过敏。3、The transmission of pollen relies mainly on wind and animals.花粉的传播主要依靠风力和动物。4、Pollen is a fine powder produced by flowers.花粉是由花产生的细粉。
spore - a small usually single-celled asexual reproductive body produced by many nonflowering plants and fungi and some bacteria and protozoans and that are capable of developing into a new individual without sexual fusion; "a sexual spore is formed after the fusion of gametes" pollinium - a ...
2. Pollen isn't just produced by flowering plants. "Any plant that has seeds, by definition, also produces pollen," Phillips said. "One of the most interesting things is, the plants that are most plain looking -- weeds, grasses -- tend to cause more allergy symptoms than the big, bea...
Pollen contains a seed plant's male reproductive cells, and in flowering plants it is produced by anthers, part of the male reproductive organs. Pollination in flowering plants is the process whereby pollen is transported from a flower's anthers to the female reproductive organ (stigma), enabli...
20. Our company is specialized in honey, royal jelly, pollen and propolis. 我们是专门供应各类蜂蜜,蜂王乳,蜂胶,花粉的公司。 pollen 词典解释 1.花粉 Pollen is a fine powder produced by flowers. It fertilizes other flowers of the same species so that they produce seeds. ...
Share on Facebook pollen sac Encyclopedia Wikipedia n. One of the chambers of an anther or a male cone in which pollen is produced; the microsporangium of a seed plant. American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publ...