Pre-Lab Questions
1. In what phylum are starfish found?
2. What is the habitat for starfish?
3. On what do starfish feed?
4. What system in their body helps them catch & hold their food?
5. What does echinoderm mean in Greek? Why is this a good name for this group?
6. Name 2 sub-types of Sea Stars.
7. Where does water enter a starfish?
2. What is the habitat for starfish?
3. On what do starfish feed?
4. What system in their body helps them catch & hold their food?
5. What does echinoderm mean in Greek? Why is this a good name for this group?
6. Name 2 sub-types of Sea Stars.
7. Where does water enter a starfish?
Post-Lab Questions
1. What type of symmetry did your starfish have?
2. What is the upper surface of the starfish called?
3. What is the lower surface of the starfish called?
4. On which surface (Dorsal or Ventral) are these parts of a starfish visible:
a. Mouth -
b. Madreporite -
c. Suckers -
d. Oral spines -
e. Eyespots -
d. Ambulcaral groove -
5. In words, trace the path water takes through the water vascular system.
6. What part of the tube foot creates suction to open clams whenever the starfish feeds?
7. Why do the gonads sometimes appear larger?
8. What type of skeleton, endoskeleton or exoskeleton, does the starfish have?
9. What bony plates make up its skeleton?
10. What is the function of the pyloric caeca?
11. Where is the stomach of a starfish located? What can the starfish do with its stomach when feeding on clams &
oysters?
12. Name the kingdom, phylum, and class for the starfish you dissected.
13. Count the number of tube feet in one ray. Estimate how many tube feet a “normal” starfish would have.
14. a. How many pairs of digestive glands did the starfish have?
b. How many pairs of gonads did the starfish have?
c. How many radial canals did the starfish have?
15. How does question 14 support the classification of Sea Stars as echinoderms?
2. What is the upper surface of the starfish called?
3. What is the lower surface of the starfish called?
4. On which surface (Dorsal or Ventral) are these parts of a starfish visible:
a. Mouth -
b. Madreporite -
c. Suckers -
d. Oral spines -
e. Eyespots -
d. Ambulcaral groove -
5. In words, trace the path water takes through the water vascular system.
6. What part of the tube foot creates suction to open clams whenever the starfish feeds?
7. Why do the gonads sometimes appear larger?
8. What type of skeleton, endoskeleton or exoskeleton, does the starfish have?
9. What bony plates make up its skeleton?
10. What is the function of the pyloric caeca?
11. Where is the stomach of a starfish located? What can the starfish do with its stomach when feeding on clams &
oysters?
12. Name the kingdom, phylum, and class for the starfish you dissected.
13. Count the number of tube feet in one ray. Estimate how many tube feet a “normal” starfish would have.
14. a. How many pairs of digestive glands did the starfish have?
b. How many pairs of gonads did the starfish have?
c. How many radial canals did the starfish have?
15. How does question 14 support the classification of Sea Stars as echinoderms?