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#1 . Food Oxygen Reproduction. #2 . Sponges have spikes to protect them and some also produce poison. #3. Sponges reproduce asexually through budding Sponges reproduce sexually by releasing eggs or sperm into the water. #4.
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#1 • Food • Oxygen • Reproduction
#2 • Sponges have spikes to protect them and some also produce poison
#3 • Sponges reproduce asexually through budding • Sponges reproduce sexually by releasing eggs or sperm into the water.
#4 • A coral polyp attaches itself to a hard surface on the ocean floor. The polyp produces a hard external skeleton. After a very long time, many, many polyps living together will create a coral reef.
#5 • Cnidarians reproduce asexually and sexually. • Asexual reproduction is through budding. • The manner of sexual reproduction is dependent on the species. But regardless, fertilization occurs.
#6 • A. Medusa (the mouth is at the bottom) • B. Polyp (the mouth is at the top) • The medusa is free swimming
#8 • A larva is an immature form of an animal. • It looks very different from the adult.