解析 C。本题考查词汇与生态系统知识。在珊瑚礁生态系统中,Coral(珊瑚)是关键物种。它为许多其他生物提供栖息地和食物来源等。Seaweed(海藻)是珊瑚礁生态系统中的一部分,但不是关键物种;Clownfish(小丑鱼)依赖珊瑚礁生存;Starfish(海星)虽然也是珊瑚礁生态系统中的生物,但不是关键物种。
Which of the following is a keystone species in a coral reef ecosystem? A. Small fish B. Coral C. Sea anemone 相关知识点: 试题来源: 解析 B。解析:在珊瑚礁生态系统中,珊瑚是关键物种。珊瑚礁为众多海洋生物提供栖息地、食物来源等重要资源,没有珊瑚,整个珊瑚礁生态系统将会受到极大的破坏,而小鱼...
Which of the following animals is known as a "keystone species" in many ecosystems? A. Mouse B. Bee C. Rabbit D. Fox 相关知识点: 试题来源: 解析 B。解析:本题考查生态平衡中的关键物种相关词汇。mouse老鼠、rabbit兔子和fox狐狸虽然都是生态系统中的一部分,但它们不是像蜜蜂(bee)那样典型的关键...
百度试题 结果1 题目Keystone species are the species that have a critical role to play in the maintenance of specific ecosystems.() 相关知识点: 试题来源: 解析 正确
A. A common plant B. A rare bird C. A small insect D. A ubiquitous bacteria 相关知识点: 试题来源: 解析 B。关键物种是对生态系统的结构和功能起着至关重要作用的物种。通常是一些比较稀少但影响力大的物种,比如稀有鸟类。A 选项常见植物、C 选项小昆虫、D 选项普遍存在的细菌一般不是关键物种。
(2012) Ruminococcus bromii is a keystone species for the degradation of resistant starch in the human colon. The ISME Journal 6 , 1535-1543 /Ze X, Duncan SH, Louis P, Flint HJ. Ruminococcus bromii is a keystone species for the degradation of resistant starch in the human colon. ISME J ...
is a keystone species in boreal forests that are dominated by coniferous tree species. Both living and dead aspen trees contribute significantly to the species diversity of forest landscapes. Thus, spatial and temporal continuity of aspen is a prerequisite for the long-term persistence of viable ...
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Keystone HeroesThe gray wolfThe gray wolf(狼) is a keystone species(物种)in Yellowstone National Park. Until the 19thcentury, hundreds of wolves roamed(闲逛Yellowstone. They caught elk(麋鹿),the largestmember of the deer(鹿) family. The government(政府) was afraid the wolves would attack farme...
百度试题 结果1 题目Which animal is a keystone species in the grassland ecosystem? A. Cow B. Antelope C. Wolf D. Chicken 相关知识点: 试题来源: 解析 C。狼在草原生态系统中是关键物种,对维持生态平衡有重要作用。牛、羚羊和鸡不是关键物种。