Practical ll Material (Arthropoda Review)

Question 1

What is the process of molting?

Answer 1

Molting is the shedding of the exoskeleton of the previous life stage (when the insect gets too big for its exoskeleton).

Question 2

How can you tell the difference between a male and female horseshoe crab?

Answer 2

By looking at the first pair of appendages. Females are larger than males and their first appendages are pincers.

Question 3

How can you tell the difference between the male and female crayfish?

Answer 3

The male crayfish has two L-shaped appendages. The females have a circular sperm receptacle between the bases of the last two pairs of walking legs.