题目内容
（请给出正确答案）
[单选题]
Which of these groups of planktonic organisms would be least likely to be living in the mesopelagic？
A.Arrow worms
B.Copepods
C.Ostracots
D.Diatoms
提问人：网友geyinglong
发布时间：2022-01-07
题目内容
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第2题
Which of these are not considered to be pelagic zooplankton（浮游动物）?
A、Arrow worms
B、Comb jellies
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第3题
What is the relationship between dissolved organic matter (DOM) and bacteria in the epipelagic?
A、Bacteria feed on the DOM, making it available to other animals in the food chain that feed on bacteria
B、Bacteria supply most of the DOM
C、Bacteria feed on DOM and thus it is unavailable to other animals
D、Bacteria cannot utilize DOM and thus feed on detritus, depleting it through most of the epipelagic
第4题
The deep-sea benthos consists mostly of:
A、Deposit （碎屑）feeders
B、Herbivores （植食）
C、Carnivores（肉食）
D、Filter feeders（滤食）
第5题
The condition that creates the largest problem for animals in the deep sea:
A、Salinity changes.
B、Temperature changes.
C、Pressure changes
D、Food availability
第6题
The major advantage that deep-sea benthic animals have over pelagic ones is that their food:
A、Is easier to digest.
B、Falls to the bottom and stays in one place, thus being available for a longer time.
C、Gets to be eaten before it gets to pelagic animals.
D、Gets decayed at much faster rates by chemosynthetic bacteria.
第7题
Bacteria thriving around deep-sea hydrothermal vents(热液喷口) are:
A、Photosynthethic
B、Symbiotic.
C、Parasitic.
D、Chemosynthetic
第8题
The energy source for the bacteria that thrive around deep-sea hydrothermal vents（热液喷口） is:
A、Hydrogen sulfide （硫化氢）
B、Light
C、Heat from the hydrothermal vents.
D、Detritus.
第9题
The giant deep-sea hydrothermal vent（热液喷口） tubeworm（管栖蠕虫） feeds on:
A、Phytoplankton that utilize the heat for primary production
B、Detritus from vent deposits.
C、Deep-sea bottom fishes that cluster around the vents.
D、It filter-feeds on chemosynthetic bacteria
