Date ______Name ______
Apologia Zoology 2 Question Pages 128-133: Crabs –
Crabs for Christmas?
1. Crabs too are ______because they have 10 legs.
2. A crab’s ______is small and “rolled up” under its body.
3. Which crab has a thicker abdomen?
malefemale
4. Crabs don’t have ______to get through water.
5. A crab’s back feet are ______-shaped.
6. Crabs move forwardssidewaysbackwards
7. A female crab’s eggs are held in an ______.
8. What are the two kinds of true crabs?
______
______
9. What two kinds of crabs are you most likely to see?
______
______
10. Fiddler crab males have two different-sized ______.
11. How did a fiddler crab get its name?
______
______
12. What “gross” thing do fiddler crabs scrape into their mouths?
______
13. A pellet of mud and sand leftover after a crab sucks out the food is called a
______.
14. ______like the large claws on a fiddler crab. The male
uses it to wave to her as she inspects his burrow.
15. Hermit crabs are missing part of their ______.
16. A hermit crab makes its shell.TrueFalse
17. A hermit crab gets in its shell by going in ______.
18. A hermit crab’s chelipeds are equal in size.TrueFalse
19. Hermit crabs are decapods.TrueFalse
20. Hermit crabs are
herbivoresomnivorescarnivores
21. When creatures live together in a close relationship, it is known as
______.
22. What creatures are hermit crabs in a symbiotic relationship with?
______
23. A symbiotic relationship where both creatures benefit is known as
______.
24. How many red crabs can be out during the rainy season on Christmas Island?
______
25. Which group comes out first?
malesfemales
26. How many crabs are killed each year on Christmas Island?
______
27. Red crabs come out to ______.
28. Red crabs prefer Christmastime because of the
low tidehigh tide