| LIVE HYDRA VIEWING WORKSHEET |
| Cnidaria tentacles ingest tissue ponds creeping hermaphroditic streams looping sex cells excrete separate paralyze cells jellyfish stinging regenerate budding multicellular organism |
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| WORD LIST |
| Part B: READ DIRECTIONS CAREFULLY BEFORE BEGINNING THIS LAB! Failure to follow directions will result in loss of lab privileges! STEP 1: Obtain a slide and hydra from your teacher. Carefully put the slide on the stage of your microscope. Using the lowest powered objective (the shortest one), find your hydra. Draw and label your hydra in the space below. LABEL: Mouth Tentacles Stalk (or body) STEP 2: GENTLY (very gently) touch the hydra�s tentacles with a toothpick. Be careful not to smash your hydra. What did you observe? STEP 3: CAREFULLY place a flake of fish food next to the hydra. Observe its actions for 5 minutes. What did you observe? PART C: Analysis/Conclusion What characteristics of living things does the hydra exhibit (or show)? List 2 or more characteristics that you have observed during this lab. T. Trimpe, 1999 |