Mast, Samuel Ottmar, 1871- · New York : J. Wiley & Sons · leaf 107
rs arenearly fifty times as large. The forms most commonly metwith average about o.i mm. in length and 0.015 nini- >™diameter. Ne?u-ly all are green, ha\dng numerous chloro- OBSERVATIONS ON UNICELLULAR FORMS 8l plasts of various forms. They have a contractile vacuolewhich opens to the exterior…
Light · Phototropism
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