题目
题目

FRST_V 303 101-107 2025W1 Final Exam Sections 103-104- Requires Respondus LockDown Browser

多项选择题

What characteristics define the first photosynthetic organisms? (multiple answers)

选项
A.They were likely cyanobacteria.
B.They consumed other organisms for energy.
C.They used sunlight to produce energy.
D.They were aerobic (required oxygen to live).
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思路分析
Question restatement: The prompt asks to identify characteristics that define the first photosynthetic organisms, and it allows multiple correct selections. Option 1: 'They were likely cyanobacteria.' This is a widely supported view in biology: cyanobacteria are among the earliest known photosynthetic organisms and are credited with oxygenic photosynthesis, which transformed Ea......Login to view full explanation

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A scientist has 12 plants. All the plants were the same kind and about the same size. He put three plants on a window sill inside a room, three plants in a closet without a light and three plants outside on the ground. He put the last three plants outside too, but covered them with paper bags that had wholes punched in them for air. All the plants were given good soil and enough water. The plants on the window sill and the plants outside in the open grew well. The plants outside in the bags turned yellow and grew badly. The plants in the closet died. Which of the following is the best hypothesis based on the facts?

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