Elements of biology, with special Elements of biology, with special reference to their rôle in the lives of animals elementsofbiolog00buch Year: 1933 12 3 Fig. 19.—The 'trial and error' method of solving difficulties as illustrated by the attempts of a paramaecium to pass by an obstacle. (After Jennings: Behavior of the Lower Organisms. Columbia University Press.) Reproduction in Paramoecium. Paramcecium reproduces by binary fission (Fig. 20). Preceding division, the oral groove dis- appears. Both the macronucleus and the micronucleus elongate DIVISION PLANE—^ MACRONUCLEUS MICRONUCLEUS Fig
Elements of biology, with special Elements of biology, with special reference to their rôle in the lives of animals elementsofbiolog00buch Year: 1933 12 3 Fig. 19.—The 'trial and error' method of solving difficulties as illustrated by the attempts of a paramaecium to pass by an obstacle. (After Jennings: Behavior of the Lower Organisms. Columbia University Press.) Reproduction in Paramoecium. Paramcecium reproduces by binary fission (Fig. 20). Preceding division, the oral groove dis- appears. Both the macronucleus and the micronucleus elongate DIVISION PLANE—^ MACRONUCLEUS MICRONUCLEUS Fig. 20.—Binary fission of a paramoecium. and at the same time a constriction appears about the animal. Di- vision is completed when the elongated nuclei have separated into two and the constriction has progressed to separate the parent ani-
Size: 1010px × 1981px
Photo credit: © Bookworm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
