A. Fix nitrogen in the air B. Decompose organic matter C. photosynthesis D. Parasitism 相关知识点: 试题来源: 解析 A。固氮细菌的主要作用是将空气中的氮气固定。分解有机物不是固氮细菌的主要作用;光合作用不是固氮细菌的作用;寄生不是固氮细菌的作用。反馈...
Oscillatoria is found in almost every aquatic habitat. It is single, filamentous, un branched and hooked. It shows oscillations. Fragmentation is the most common mode of reproduction. Anabaena is nitrogen fixing bacteria that is free to live in aquatic habitats. They also occur as symbiotic in ...
Nitrogen Uses and Properties - Nitrogen is a diatomic gas with atomic number 7 and symbol N. Know the nitrogen atomic number, the atomic mass of nitrogen and atomic weight of nitrogen. Explore the Uses of Nitrogen.
Many insects feed on a low‐nitrogen diet,and the origin of their nitrogen supply is poorly understood.It has been hypothesized that some insects rely on nitrogen‐fixing bacteria(diazotrophs)to supplement their diets.Nitrogen fixation by diazotrophs has been extensively studied and convincingly ...
What is the role of auxins in plants? Briefly explain the process of nitrogen fixation in the soil. Is nitrogen a macronutrient, a micronutrient, or neither? Explain what its primary function is in plant growth and development. Discuss nitrogen-fixing, nitrifying, and denitrifying bacteria, the ...
Discuss the Nitrogen cycle in microbiology. What is the structure of bacteria? Nitrogen-fixing bacteria convert into. Why bacteria are important? What role do hopanoids play in bacteria, one of which exists at low temperature and the other at a higher temperature? What is the role of iron as...
Nitrogen-fixing Bacteria On the other end of the spectrum, the most common way nitrogen is made available to organisms is when atmospheric nitrogen is fixed by bacteria, some of which live free in the soil and others of which enjoy a symbiotic relationship with certain plant species. Legumes ...
Botulinum toxin produced by Clostridium botulinum is among the most potent toxins known. 7 Microbe Microbes play a crucial role in recycling nutrients, such as carbon and nitrogen, in the environment. Nitrogen-fixing bacteria in soil convert nitrogen gas into a form that plants can use. 6 Pathog...
2. Nitrogen Cycle Nitrogen is also an essential component of life. Nitrogen cannot be directly utilised by living organisms and has to be converted to other forms. By the process of nitrogen fixation, nitrogen-fixing bacteria fix atmospheric nitrogen to ammonia and nitrifying bacteria convert ammonia...
The sun shot through a break in the clouds. Roots Roots often interact with fungi and bacteria. The roots of legumes interact with nitrogen-fixing bacteria. Shoots To move swiftly; dart. Shoots To be felt moving or as if moving in the body Pain shot through my lower leg. Shoots To protr...