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Planarians eat decaying organic matter found on the bottom of streams and ponds.

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16y ago

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Are planarians herbivores?

Yes


Why do planarians regenerate?

Planarians are able to regenerate because they have a population of adult stem cells called neoblasts that can differentiate into any type of cell needed. These neoblasts are responsible for the continuous growth and renewal of tissues in planarians, allowing them to regenerate lost body parts.


Is it true that adult planarians can focus well enough with their eyespots to form images of objects in their environment?

No, adult planarians are not able to form detailed images of objects in their environment with their eyespots. Eyespots are light-sensitive organs that can detect light and shadows, but they do not have the ability to create detailed images like a true visual system. Planarians rely more on their chemosensory capabilities for navigating their environment.


Do planarian have tissue?

Yes, planarians have well-defined tissues that make up different parts of their body, including muscle, nerve, reproductive, and digestive tissues. These tissues enable planarians to perform various physiological functions such as movement, digestion, and response to stimuli.


How does a planarians response to light relate to survival?

Planarians exhibit a behavior known as phototaxis, where they move away from light sources. This response is critical for their survival as it helps them avoid potential predators and harsh environmental conditions associated with bright light. By seeking dark, moist environments, planarians can maintain their habitat, conserve moisture, and enhance their chances of survival and reproduction. This adaptive behavior underscores the importance of sensory responses in the evolutionary success of organisms.