Planaria: Dugesia
Figure 1. Planarians reproduce using asexual buds and when the
summer comes to an end they lay eggs instead. © BIODIDAC
Figure 2. External anatomy of the planarian Dugesia. © BIODIDAC
Figure 3. Internal features of the common
planarian Dugesia. © BIODIDAC
Figure 4. The reproductive structures of the hermaphrodite flatworm
prevent self fertilization; mature eggs are produced only after sperm
has been received from the other flatworm. © BIODIDAC
Copyright © 2012 by Nelson Education Ltd.
Planaria: Dugesia
Figure 6. Detailed view of the body wall
of the planarian Dugesia. © BIODIDAC
Figure 5. Ladderlike nervous system and sensory
organs of the planarian Dugesia. © BIODIDAC
Copyright © 2012 by Nelson Education Ltd.
Figure 7. Cross section through the pharyngeal
region of the planarian Dugesia. © BIODIDAC