anthropods

Question 1

into which groups are arthropods divided

Answer 1

arachnids, crustaceans, insects

Question 2

what is the typical body structure of an insect

Answer 2

head, thorax, abdomen

Question 3

what is a rigid and flexible outer shell in arthropods called

Answer 3

exoskeleton

Question 4

what is molting and why does it happen

Answer 4

regrowing a shell, they need it to grow naturally

Question 5

what do terrestrial arthropods use for breathing

Answer 5

trachea

Question 6

what is the only species of spider known to live almost entirely under water

Answer 6

diving bell spider / water spider

Question 7

what is our largest crustacean

Answer 7

the european crayfish

Question 8

what is the crayfish’ exoskeleton made of

Answer 8

cephalothorax, abdomen

Question 9

what is the function of short legs located on the abdomen

Answer 9

to attach eggs

Question 10

name 3 characteristics of the european crayfish

Answer 10

The body is covered with hard crust of chitin and calcium carbonate
Parts of the “crust” are moveably connected
The crust forms exoskeleton and protects the internal organs

Question 11

name 3 species belonging to freshwater insects

Answer 11

diving beetle, gerris, mayfly