试题来源: 解析 C。解析:种子(seed)包含着新植物的胚,是植物繁殖的重要结构。果实(fruit)主要是保护种子并有助于种子传播,不包含胚本身,A错误。花粉(pollen)是雄性生殖细胞,不是包含胚的结构,B错误。花朵(flower)是繁殖器官,但本身不包含新植物的胚,D错误。反馈 收藏 ...
A flower is a special part of the plant. Flowers are also called the bloom or blossom of a plant. Inside the part of the flower that has petals are the parts which produce pollen and seeds.,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商
Plant cells which aid in pollen digestion within a beetle's gut. Oecologia 82, 424-426.Rickson FR, Cresti M, Beach JH (1990) Plant cells which aid in pollen digestion within a bee- tle's gut. Oecologia 82: 424-426. https://doi.org/10.1007/BF00317493...
Said extracts of pollen which do not contain m... A Lewenstein,FK Habib - US 被引量: 12发表: 1990年 Pollen extracts reduce the hepatotoxicity of paracetamol in mice Cernitins are preparations obtained from plant pollen which contain numerous compounds of potential biological significance. This ...
【题目】Wind pollination Pollen, a powdery substance, which is produced y flowering plants and contains male reproductive cel ls, is usually carried from plant to plant by insects r birds, but some plants rely on the wind carry th eir pollen. pollination is often seen as being pri mitive ...
(grow)plants native to your area.This helps wildlife like birds and insects that evolved alongside native plants.For many of these animals,plant pollen(花粉)is their food. Native pollinators(传粉者)often cannot recognize non-native plants food's planting non-native species cr...
瑞鸿网词典双语例句Flowers are designed to attract insects which then carry the pollen from plant to plant.花的作用在于吸引昆虫,然后昆虫再将花粉传到其他植株上。
native to your area.This helps wildlife like birds and insects that evolved alongside native plants.For many of these animals,plant pollen is their food.Native pollinators(传粉者) often cannot recognize non-native plants as food.This means they do not collect the pollen or ...
Certain genetically modified strains of maize produce a powerful natural insecticide. The insecticide occurs throughout the plant, including its pollen. Maize pollen is dispersed by the wind and frequently blows onto milkweed plants that grow near maize fields. Caterpillars of monarch butterflies feed ...
Managing Space and Plant Size Limited space? Autoflowering plants are compact and won’t take up much room. If you have ample space and want a big harvest, feminized plants can be grown large, producing more buds. Experience Level of the Grower ...