Volvox are spherical colonies of green algae cells clinging to a semi-transparent hollow ball of mucilage. A single colony may consist of over 500 cells, each one with a tiny pair of whip-like tails (flagella) - and all cells undulating their flagella in unison, propelling the colony through the water. Very large colonies can exceed 1 mm in diameter and are easily visible to the naked eye.
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TOP22222564
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達志影像
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RM
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