Marine Science

  1. Rotifers and bryozoans are both?
  2. Sponges and bryozoans are both?
  3. We know the sponges is a multicellular marine animal, however, sponges has 2 layers of mostly undifferentiated cells. What are the names of this 2 layers cells?
    endoderm [ inner layer ] and the ectoderm [ outer layer ]
  4. The sponges has 2 layers cells the outer and the inner, between this 2 layers is a jellylike material. How do we called to this material?
  5. Sponges are classified in the phylum?
  6. Sponges are Porifera meaning "pore bearing". Since they inhabit the seafloor, sponges are considered botto-dwelling organisms. What is this mean?
    A. Thet are Invertebrates
    B. They are Sedentary
    C. They are Benthic
    D. They are Microscopic
    Thet are Benthic.
  7. The sponge cannot move to feed. So, to able to eat, tiny food particles and plakton enter through small pores, which are surrounded by pores cells. How do we called to this Pores?
  8. In the Sponges, water and wastes exit through large holes, which is usually located at the top of the sponge. How do we called to this large holes?
  9. Inside the sponge are special cells that contain flagella, which beat back and forth. What is the name of this special cells?
    Collar cells
  10. What king of marine animals are ingested and digested by the Collar Cells?
    Plankton, bacteria, and other tiny particles are trapped on currents of water.
  11. Sponges take oxigen and get rid of carbon dioxide because they are in direct contact with water. So How does the gas exchange and cross?
    by the cell membranes
  12. The sponge does not have a nervous system, so if you touch any sponge will not move. However, the sponge has muscle-like cells located near the "ostia" and "oscula" How do we called this muscle-like cells?
  13. This ability to close the ostia is probably a defensive reaction that protects the sponge from taking in any toxigen substance in the water. Since we know the sponge lack of nervous systen, what is the other muscle-like cell that describe the above question?
  14. We know that Sponges cannot swim but when we going to swim to the Ocean, we found the sponges are attach almost on everything. Well, They attach because the sponges has a "life cycle". So, What is the frist stage in the development of the sponge in its "life cycle"?
  15. In the "life cycle" of the sponge are 8 developent stages till the sponge gets an Adult, we know the 1st stage is the Zygote, then cell division continues until a "solid ball". What is the name of this "solid ball" or the 2nd stage of the sponge?
  16. The rapid division of cells in the "life cycle" of the sponge is called cleavage, and the organisms at this point is referred to as ?
  17. What is the 5th develoment in the "life cycle" of the sponge, which enable the embryo to swim?
  18. In the "life cycle" of the sponge, the 5th develop ( blastula ) enable the embryo to swim at this stage in its development the embryo pass to the next stage. what is the 6th develop of the sponge?
  19. Write in order the "life cycle" of the sponge.
    6. Larva (free living)
    8. Adult
    • 1. Zygote
    • 2. 2-celled stage
    • 3. 4-celled stage
    • 4. Morula
    • 5. Blastula
    • 6. Larva (free living part of the plackton population)
    • 7. Larva ( attach to a substrate)
    • 8. Adult
  20. The sponges can be either, male or famale. How do we called when an Animal is either, male or famale?
  21. The sponges can be sexually and asexually and sometimes, part of a sponge can breaking off and then grow into a whole NEW sponge. (Incredible right?....) How do we called to this creazy reproduction of the sponge?
  22. This sponge, which lives in warm tropicals water, was used to be for commercial use in America and Europe.

  23. It Is is estimated that a single bath sponge can filter?
    100 liters of seawater in an hour
  24. This sponge grow on the shells of clams and other shellfish and is so named because it uses an acid to bore holes into shells in order to attach to them.

  25. 25. Living things such as sponges that grow over the surface of substrates are called?
    encrusting organisms
  26. 26. Why some animals eat sponges?
    Because of mineral such Calcium Carbonate or silica
  27. Sponges have a rigid structure, due to their skeleton of chalk called?
  28. 28.Tha natural bath sponge, have an elastic framework of protein fibers called.
  29. The beautiful Venus's flower basket, which lives at great depths, is a sponge composed of a delicate network of glassy spicules.

  30. 30. Is a sponge found on sandy bottoms near coral reefs, grows vertically.

  31. 31. Live in the moist sands along the shore and in the gravel of aquarium tanks and are multicellular organisms.
  32. 32. Rotifers are in their own unique phylum called and are able to change the shape of their body.
  33. 33. Some rotifers are predatory and others are?
    Scavenge on debris
  34. In the reproduction in the Rotifer, sperm and egg cells contain the hereditary material from each of the parents that is necessary for sexual reproduction. How do we called to this eggs and sperms?
  35. When the Gametes released into the water, where they unite, Sperm cells are able to move through water because each one possesses a?
    Taillike flagellum
  36. Rotifers have external fertilization and external development. what is this mean?
    It means the events take place outside the body of the female
  37. Rotifers can also reproduce by an asexual process called, in this process, the famale produces an egg, without fertilization.
  38. Is a benthic organism and ist classified in its own phlyum Bryozoa, it's also a multicellular animal that lives within a box made of calcium carbonate.
  39. What king of marine animals the bryozoan feeds on it?
    Plankton and organic debris
  40. Bryozoans can reproduce asexually. This process by which a small individual develops on, and then separates from, the larger parent body. How do we called to this asexually reproduction?
  41. Does the bryozoan can reproduce both sexually and asexually?
  42. We know that the Bryozoan are asexually, if so, what does they produce?
    sperm and egg

    Most Bryozoans are "Hermaphrodites"

    Bryozoans are only sexually
  45. False or True?

    Sometimes the bryozoans are mistaken for a sponge
  46. False or True

    Bryozoans are classified in the phylum Porifera.
Card Set
Marine Science
6.4 Sponges, Rotifers, And Bryzoans