Most photosynthesis in the open ocean occurs in the _________.

Question

BlackTom AI · Accepted Answer

The question asks where most photosynthesis occurs in the open ocean, so we need to consider light availability and productive zones.
Option: benthic zone — This is the ocean floor. In open-ocean contexts, light is extremely limited at the benthos, so photosynthesis is minimal there. Organisms near the bottom may rely on detritus rather than in situ photosynthesis.
Option: estuary zone — Estuaries are mixing regions where rivers meet seawater. They can be productive for certain communities, but they are not representative of open-ocean photosynthesis zones, and the question specifies the open ocean rather than coastal/estuarine systems.
Option: bathyal zone — The bathyal zone lies at intermediate depths (roughly 1000–4000 m) with very little light. While some chemoautotrophs or specialized organisms may persist, the light-driven photosynthesis that dominates open-ocean productivity is not supported there.
Option: abyssal zone — The abyssal zone is far deeper (beyond ~4000 m) with near or total darkness; photosynthesis is effectively nonexistent in this zone due to insufficient light.
Option: euphotic zone — The euphotic (or photic) zone is the upper layer of the ocean where enough sunlight penetrates to drive photosynthesis. In the open ocean, this is the region where phytoplankton photosynthesize most actively, supporting the majority of marine primary production.
In summary, light availability decreases with depth, and the open-ocean primary production is concentrated where light supports photosynthesis, which is the euphotic zone. The other zones either lack sufficient light or are not typically associated with open-ocean primary production.

11:375:101:91 INTRO ENV SCIENCE Quiz #12

Most photosynthesis in the open ocean occurs in the _________.

查看解析

登录即可查看完整答案

类似问题

Most photosynthesis in the open ocean occurs in the ____.

In a consumer society, many adults channel creativity into buying things

Economic stress and unpredictable times have resulted in a booming industry for self-help products

People born without creativity never can develop it

A product has a selling price of $20, a contribution margin ratio of 40% and fixed cost of $120,000. To make a profit of $30,000. The number of units that must be sold is: Type the number without $ and a comma. Eg: 20000

Which of the following statement regarding cost is correct:

Under the assumptions used in cost-volume-profit analysis, as the activity increases:

The CVP and break-even analysis are supported by a range of important assumptions. Which of the following is not an assumption of the CVP:

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单