【解析】 1.选 A 细节理解题,根据第一段的“Flowering plants,or angio sperms(被子植物), make up about 90% of all living plant spe- cies, including most food crops"以及第二段的“They quickly spread to all parts of the world. changing the landscape from green toavariety of colours"可知,被...
Inside the seed is a plant embryo, food for the embryo, and a seed coat to protect it. Seeds may be dispersed by a number of ways including air, water, and animals. Some seeds are light and have hairs or wings that help them to float in the air. Other seeds can float on the ...
Define flowering plant. flowering plant synonyms, flowering plant pronunciation, flowering plant translation, English dictionary definition of flowering plant. n. A plant that produces flowers and fruit; an angiosperm. American Heritage® Dictionary of
nonflowering plant- plants having vascular tissue and reproducing by spores pteridophyte division Pteridophyta,Pteridophyta- containing all the vascular plants that do not bear seeds: ferns, horsetails, club mosses, and whisk ferns; in some classifications considered a subdivision of Tracheophyta ...
Then seeds end upon the ground. 相关知识点: 试题来源: 解析 【解析】1. food for the embryo2.light3. to float4. rivers and streams5.tasty fruits6. air, water and soil7.seedling8.soil9. leaves, roots and stems10.Flowering 反馈 收藏 ...
Flowering plants,or angiosperms(被子植物),make up about 90% of all living plant species,including most food crops.In the distant past,they developed quicker than plants such as conifers and ferns,but how they did this has been a mystery.New research suggests that it is due to genome(基因组...
Plants are flowering faster than scientists predicted(预测)in reaction to climate change which could have long damaging effects on food chains and ecosystems.Global warming is having a great effect on hundreds of plant and animal spec
are absorbed by the plants to enable their survival under otherwise marginal or hostile environmental conditions. Most carnivorous species are green plants that manufacture food byphotosynthesisfrom the raw materials ofsunlight,water, andcarbon dioxidein the presence ofchlorophyll. The carnivorous habit aug...
Humans have carefullyselectedandcultivatedplants for food, medicine, clothing, shelter, fibre, and beauty for thousands of years. Disease is just one of many hazards that must be considered when plants are taken out of their naturalenvironmentand grown in pure stands under what are often abnormal...
All animals depend on plants for food and oxygen, and most flowering plants depend on animals. 所有动物都得依赖植物来获得食物和氧气,而大部分开花植物则要倚靠动物才能繁殖。 jw2019 For instance, 500 calories of natural plant food fills the stomach completely, triggering both our stretch and de...