While on a picnic, you avoid an insect with yellow and black stripes. Later, you discover the insect was a harmless fly. What self-defense does this fly use?
Swimmerets help some crustaceans, like crabs, take in dissolved oxygen by forcing the water over __________.
What do millipedes feed on?
|B)||plants and decaying material|
|D)||snails and slugs|
How are arthropods like annelids?
|A)||Both have jointed appendages.|
|B)||Both have segmented bodies.|
|C)||Both have setae.|
|D)||Both have an exoskeleton.|
What special feature does a cephalopd use to move quickly?
|A)||a muscular foot|
|B)||creeping on tentacles|
|C)||a jet of water|
|D)||rapid movement of its shell|
One reason segmented worms are important to humans is because some of them __________.
|B)||condition and aerate the soil|
|D)||drill holes in submerged wood|
What are the stages of development in complete metamorphosis?
|A)||egg, worm, adult|
|B)||egg, nymph, and adult|
|C)||egg, birth, larva, insect|
|D)||egg, larvae, pupa, and adult|
What does the word annelid mean?
Which one of the following is an example of an arachnid?
Scientists hypothesize that __________ are the invertebrate group that most closely resembles animals with backbones.
Which one of these animal groups is radially symmetrical?
Earthworms are hermaphrodites. This means that they produce ___________.
|A)||neither sperm nor eggs|
|B)||sperm and eggs in the same body|
A(n) __________ is an example of an organism from the most specialized and complex mollusk group.
Which one of the following is a thin layer of tissue in mollusks that often secretes a shell?
At the ocean, you find an organism that is covered with stiff, hairlike spines. Which one of the following is it likely to be?
Because bivalves are __________, bacteria and other harmful organisms often become trapped in clams and oysters.
An arthropod's old exoskeleton is shed and replaced by a new one in a process called __________.
What annelid worm has a sucker at each end of its body?
Crabs and water fleas are examples of __________.
Which group of mollusks often has eyes on the tips of tentacles and uses a radula to obtain food?