Tree pollen, as well as the pollen from sedges and grasses, is usually windborne. Explain how the structure of grass and sedge pollen is different from the pollen found in plants like roses. What is pollination? What are the main forms of pollination? What are the reproductive parts of th...
a. What is pollen? b. Which plants have pollen? which group of seed producers are the largest, most massive and oldest in the world? angiosperms or gymnosperms? Which of the following is true about the plant kingdom? A. Only non-vascular plants shed spores B. It has been m...
Identifying pollen is difficult without a magnifying glass because of the small size. Pollen is shaped differently depending on the type of plant from which the pollen originates. For example, the pollen produced by Entomophilous plants is a sticky, protein-rich pollen attractive to bees–it is...
Have you ever looked around and wondered where plants come from? They're made through a very important part of the plant life cycle: pollination.Pollinationis the process of transferring pollen from the male part of the plant, the anther, to the female part of the plant, the stigma, to ...
B. Spreading pollen to flowers and plants.C. Sending information about weather change.D. Finding out whether the plant has flowers. 相关知识点: 试题来源: 解析 B **选项分析**: - **A. 让植物提前开花**:目前没有明确证据表明熊蜂直接促使植物提前开花。植物开花时间主要受光照、温度等环境因素调控...
Some plants have male and female parts on the same flower and can self-pollinate, while other plants produce male and female parts on separate plants. In any event, pollination requires the movement of pollen from the stamen to the pistil so the steps of sexual plant reproduction can continue...
Some groups of plants take pollination to the next level, recruiting animals to help them out. First, as all beekeepers know, pollen itself is a great source of protein, attractive to many animals on its own. Many plants also produce substances, like nectar, to attract even more animals to...
3. Plantscanreproducebothsexuallyandasexually. 4. Allplantshaveatwo-stagelifecycle. Doyouagreeordisagree? ChapterIntroduction 5. Plantsrespondtotheirenvironments. 6. Becauseplantsmaketheirownfood,theydonotcarryoncellularrespiration. Doyouagreeordisagree?
Pollination is required for flowering plants to produce seed for the next generation. Pollen produced by a plant is located on the anthers of a flower, but must reach the stigma, where the wind or an insect aids in transporting pollens...(US Forest Service) ...
Plants that producewind-blown pollen, many of which are trees, make life miserable for millions of human allergy sufferers each year. A large number of tree species produce extremely small pollen particles from their male sexual parts. These trees use the wind as their favorite means of pollen...