If you havenât visited Louisville, KY lately, you might not recognize it. The entire downtown is nearing the completion of a $1 billion revitalization. On virtually every corner thereâs something new popping upânew Bourbon distilleries, new Southern-inspired culinary destinations and new places to explore.
What type of symmetry do sponges have? A: Some sponges have radial symmetry, but many species are irregular in shape and have no symmetry at all. Two simpler groups of sponges, known as asconoid an... Full Answer >
Answer 2: Sponges generate currents with the flagella on their cells and direct water through their walls and into their central cavities, filtering the water for bacteria, algae, and protozoa as they do so. They reproduce by broadcast-spawning: sending out huge numbers of sperm and eggs into the water and hoping that they meet.