Phylum Porifera
Characteristics:
-No Classes: only sponges
-Most primal animal
-Has no germ tissue
-Filter feeds for food
-Can reproduce asexually as well as sexually
-Amoebocytes turn to eggs and the coanicytes turn into sperm for reproduction. These cells double as reproductive cells and digestion cells
-Most primal animal
-Has no germ tissue
-Filter feeds for food
-Can reproduce asexually as well as sexually
-Amoebocytes turn to eggs and the coanicytes turn into sperm for reproduction. These cells double as reproductive cells and digestion cells
Lab:
Analysis:
1. How does water move through a sponge?
Water flows in to the sponge Ostrium, the collar cell's flagella filter the water and catch bits of food found in it, the food is transported to the amoebocytes to digest it, the nutrients are carries around the rest of the sponge's body.
2. What importance does water play in the survival of a sponge?
Waste treatment, water filter feeding, reproduction, circulation/respiration.
3. How do sponges reproduce?
Asexually: Gemules
Sexually: Collar cells turn into sperm and amoebocytes turn to eggs via meiosis, water carries the together, zygote forms and falls through ostrium, the zygote grows by mitosis into a sponge.
4. What materials give sponges their structure?
Spicules and spongen give sponges their structure, spicules for shape, spongen for body.
Water flows in to the sponge Ostrium, the collar cell's flagella filter the water and catch bits of food found in it, the food is transported to the amoebocytes to digest it, the nutrients are carries around the rest of the sponge's body.
2. What importance does water play in the survival of a sponge?
Waste treatment, water filter feeding, reproduction, circulation/respiration.
3. How do sponges reproduce?
Asexually: Gemules
Sexually: Collar cells turn into sperm and amoebocytes turn to eggs via meiosis, water carries the together, zygote forms and falls through ostrium, the zygote grows by mitosis into a sponge.
4. What materials give sponges their structure?
Spicules and spongen give sponges their structure, spicules for shape, spongen for body.