22. Describe the body of a leech. In what way do the leech’s adaptations make it suited for its niche?
25. What three methods do echinoderms use to get food?
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Two Biology Questions!! Please Help :'(?
Posted on April 1, 2011.
I’m sorry I don’t know how to answer question #22.
The 3 methods used by enchinoderms to get food are:
1) Using tube-feet to catch and open prey. For example, starfish (Asteroidea) uses tube-feet to prey on clams before consuming it.
2) Using tube-feet to rummage in the seafloor sediment, pick up food items, and push them into the mouth. For example, some of the sea urchins (Echinoidea)
3) Using extending arms that carry tube-feet specialized to generate water currents, filtering them, and carrying the back along to its mouth. For example, the feather stars (Crinoidea).