Zoology Lab Seven

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Across
  1. 2. Cavity A central digestive compartment with a single opening, serving both as a digestive and circulatory system, found in certain invertebrates like cnidarians.
  2. 4. A toxin produced by certain organisms, often cnidarians, that can induce paralysis or other effects on prey or predators.
  3. 5. The female reproductive organ where eggs are produced and mature.
  4. 6. The sensory hair-like structure that, when stimulated, causes the discharge of a cnidocyte's nematocyst.
  5. 7. A form of asexual reproduction where a new organism develops from an outgrowth on the parent organism.
  6. 9. A ring-shaped structure in the body of a jellyfish that encircles the bell and aids in the circulation of nutrients and waste.
  7. 11. The early polyp stage in the life cycle of a jellyfish characterized by a tubular body with tentacles surrounding a central mouth.
  8. 12. A reproductive structure in colonial hydrozoans that contains gonozooids.
  9. 13. Reproductive organs responsible for producing gametes (eggs or sperm) in jellyfish and other animals.
  10. 15. The central area of a jellyfish's body where the mouth is located.
  11. 19. The gelatinous, non-living layer found between the epidermis and gastrodermis in cnidarians, providing structural support.
  12. 20. Pouches extending from the central stomach of a jellyfish, involved in digestion and nutrient absorption.
  13. 23. An opening in the body wall of certain animals, particularly sponges, through which water enters.
  14. 25. Wall The outer covering of an animal's body, providing structure, protection, and support.
  15. 26. The chain of saucer-shaped segments formed during strobilation in the life cycle of certain jellyfish.
  16. 29. A series of canals radiating from the circular canal of a jellyfish, distributing nutrients throughout the body.
  17. 30. The base of a cnidarian's body where the organism attaches to a substrate.
  18. 33. The outermost layer of cells covering the body of an organism, providing protection and sometimes serving other functions like gas exchange.
  19. 36. Having both male and female in the same individuals
  20. 37. A ciliated groove in the pharynx of some cnidarians, used for directing water into the digestive cavity.
  21. 39. A free-swimming, ciliated larval stage in the life cycle of cnidarians.
Down
  1. 1. The adhesive base or foot of certain sessile organisms, providing attachment to a substrate.
  2. 3. Feeding polyps in colonial cnidarians responsible for capturing prey.
  3. 8. having the male and female organs in separate and distinct individuals
  4. 10. Small, specialized organelles within cnidocytes that contain a coiled, thread-like structure capable of injecting toxins into prey or attackers.
  5. 14. Radial partitions within the body cavity of certain animals, such as corals, contributing to structural support.
  6. 16. The male reproductive organ where sperm is produced.
  7. 17. The part of the digestive tract situated between the mouth and the esophagus.
  8. 18. Small, asexual reproductive structures that develop into jellyfish in the life cycle of cnidarians.
  9. 21. The process by which a scyphistoma forms a series of stacked, saucer-shaped segments called strobilae, which eventually develop into individual medusae.
  10. 22. Specialized cells containing stinging organelles (nematocysts) found in cnidarians and used for defense and capturing prey.
  11. 24. Partial partitions within the body cavity of certain animals, such as corals, which may not extend fully across the cavity.
  12. 27. Elongated, often flexible structures bearing sensory organs or appendages, used for feeding, locomotion, or defense in various organisms, particularly invertebrates such as cnidarians.
  13. 28. The opening of a moss capsule through which spores are released.
  14. 29. A sensory structure found on the margin of the bell of certain jellyfish, containing nerve cells and sensory organs.
  15. 31. The living tissue that connects polyps in colonial cnidarians, allowing for communication and nutrient sharing.
  16. 32. The inner layer of cells that lines the gastrovascular cavity in cnidarians and some other invertebrates, involved in digestion and nutrient absorption.
  17. 34. The mouth-like structure at the oral end of certain invertebrates, typically found in cnidarians such as jellyfish and hydras.
  18. 35. Thread-like structures containing nematocysts found in the body cavity of certain sea anemones, used for defense and prey capture.
  19. 38. Arm-like extensions from the central mouth of certain jellyfish, aiding in prey capture and digestion.